Entity framework extends the actual combat, small project reconfiguration, no trouble

A console program ,MSSQL 2008 database , One of the large table data exceeds 6000 Ten million , Development time is limited, it is impossible to spend a lot of time designing 、 framework . The first reason to use the console is to achieve efficient operation , Second, the program runs regularly on the server without human intervention . To ensure the maintainability and rapid development of the program and the efficient operation of the program , There is no time for layered development , Directly used entity framework And combine ado.net Yes EF It has been extended . Do not toss because of fear EF There is a performance problem using sqlbuckcopy Bulk insert data , Use DB FIRST. Refactoring is because it turns out to be oracle database , Database has been changed to MSSQL 2008.

1、 Solution 、 framework

Solution ：

 

2、 Business description

The main business of the program is to read the... Under the specified directory XML file , Sort and piece up the records in the files to form the corresponding table in the database datatable, And then use SqlBulkCopy Bulk insert database . The file is from a remote computer through FTP The uploaded .XML The records inside are inconsistent with the table structure of the corresponding table in the database to be stored , Need conversion and completion . The program runs regularly , Use the scheduled task of the operating system to schedule . The log component uses log4net, To achieve console display and database logging .

3、 Key codes and coding ideas

1、 Business logic implementation

2、EF The extension class

using System.Data;
using System.Data.EntityClient;
using System;
using System.Data.SqlClient;
using System.Configuration;

namespace XXX_App
{
    public partial class XXX_DBEntities : global::System.Data.Objects.ObjectContext
    {
        Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
        /// <summary>
        ///  Use ado.net perform sqlbulkcopy
        /// </summary>
        /// <param name="dt"></param>
        /// <param name="efConnectStr">webconfig Database connection string in </param>
        /// <returns></returns>
        public bool ExecuteSqlBulkCopy(DataTable dt)
        {
            string dbConnStr = this.GetEF_ConnectStr2Ado_ConnectStr();
            bool result = false;
            #region ado.net execute sqlbulkcopy
            using (SqlConnection dbConn = new SqlConnection(dbConnStr))
            {
                try
                {
                    #region  perform sqlbulkcopy
                    dbConn.Open();
                    SqlCommand cmd = dbConn.CreateCommand();
                    cmd.CommandText = "delete sc_productsource_temp";                    
                    cmd.ExecuteNonQuery();
                    new SqlBulkCopy(dbConn) 
                    {
                        DestinationTableName = "sc_productsource_temp", 
                        BatchSize = dt.Rows.Count,
                        BulkCopyTimeout = 1800
                    }.WriteToServer(dt);
                    #endregion
                    result = true;
                }
                catch (Exception ex)
                {
                    result = false;
                    throw new Exception(ex.Message);
                }
                finally
                {
                    if (result)
                    {
                        #region  The flow detail record of the temporary table is transferred to the official  SC_PRODUCTSOURCE
                        SqlCommand cmd = dbConn.CreateCommand();
                        cmd.CommandText = " INSERT INTO  SC_PRODUCTSOURCE (PRODUCTSOURCEID,FACTORYID,PRDLINEID "+
                                          " ,MACRANDOMCODE    ,PRODUCTBATCHIDX ,LASERDNA_CODE ,PRODUCTNO ,PRODUCTNAME,PRODUCTTYPENAME"+
                                          " ,PRODUCTDATE ,PRINTCODEDT ,FACTORYSHIFTNO ,OUTBOX_DNACODE ,VIRTUALBALECODE" +
                                          " ,SENDTONDC_DT,FAC_NO,PRODUCTVERSION) " +
                                          " SELECT  NEWID() PRODUCTSOURCEID,FACTORYID,PRDLINEID,MACRANDOMCODE,PRODUCTBATCHIDX " +
                                          "      ,LASERDNA_CODE,PRODUCTNO,PRODUCTNAME,PRODUCTTYPENAME,PRODUCTDATE,PRINTCODEDT " +
                                          "      ,FACTORYSHIFTNO,OUTBOX_DNACODE,VIRTUALBALECODE,SENDTONDC_DT,FAC_NO,PRODUCTVERSION " +
                                          " FROM sc_productsource_temp";         
                        cmd.ExecuteNonQuery();
                        #endregion                        
                    }
                    dbConn.Close();
                }
            }
            #endregion
            return result;
        }

        /// <summary>
        ///  Prepare a temporary table 
        /// </summary>
        /// <param name="efConnectStr"></param>
        /// <returns></returns>
        public DataTable GetTmpNewDataTable()
        {
            return this.GetDbHelperSQL_Instance().Query("select * from sc_productsource_temp where 1=2").Tables[0];            
        }

        /// <summary>
        ///  take EF The connection string of is converted to Ado.net Connection string of 
        /// </summary>
        /// <param name="efConnectStr"></param>
        /// <returns></returns>
        private string GetEF_ConnectStr2Ado_ConnectStr()
        {
            string[] tmpStr = config.ConnectionStrings.ConnectionStrings["XXX_DBEntities"].ConnectionString.Split(";".ToCharArray());
            string dbConnStr = string.Empty;
            if (tmpStr.Length == 8)
            {
                // Splice new and usable ado.net Connection string 
                dbConnStr = string.Join(";", new string[] { "Data Source =" + base.Connection.DataSource, tmpStr[3], tmpStr[4], tmpStr[5], tmpStr[6].TrimEnd(new char[] { '"' }) });
                return dbConnStr;
            }
            else
            {
                return string.Empty;
                throw new Exception(" Please configure the database connection mode as ：sql authentication ; I won't support it WinNT Integrated security approach .");
            }
        }

        /// <summary>
        ///  Get the data of the first row and the first column 
        /// </summary>
        /// <param name="efConnectStr"></param>
        /// <param name="sqlTxt"></param>
        /// <returns></returns>
        public string AdoExecuteScalar(string sqlTxt)
        {
            string dbConnStr = this.GetEF_ConnectStr2Ado_ConnectStr();
            using (DbHelperSQL db = new DbHelperSQL(dbConnStr))
            {
                return db.GetSingle(sqlTxt).ToString();
            }
        }
       
        public DbHelperSQL GetDbHelperSQL_Instance()
        { 
            string dbConnStr = this.GetEF_ConnectStr2Ado_ConnectStr();
            return new DbHelperSQL(dbConnStr);
        }
    }
}

 3、 Modified dynamic software DbHelper,Ado.net Storage class

using System;
using System.Collections;
using System.Collections.Specialized;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Data.Common;
using System.Collections.Generic;
namespace XXX_App
{
    /// <summary>
    ///  Data access Abstract basic class 
    /// Copyright (C) Maticsoft 
    /// </summary>
    public class DbHelperSQL : IDisposable
    {
        // Database connection string (web.config To configure the ), Multiple databases available DbHelperSQLP To achieve .
        private string connectionString;
        /// <summary>
        ///  Database connection string 
        /// </summary>
        public string ConnectionString
        {
            get { return connectionString; }
        }

        public DbHelperSQL(string connStr)
        {
            connectionString = connStr;
        }

        #region  Common method 
        /// <summary>
        ///  Determine whether there is a field in a table 
        /// </summary>
        /// <param name="tableName"> The name of the table </param>
        /// <param name="columnName"> Column name </param>
        /// <returns> Whether there is </returns>
        public bool ColumnExists(string tableName, string columnName)
        {
            string sql = "select count(1) from syscolumns where [id]=object_id('" + tableName + "') and [name]='" + columnName + "'";
            object res = GetSingle(sql);
            if (res == null)
            {
                return false;
            }
            return Convert.ToInt32(res) > 0;
        }

        public int GetMaxID(string FieldName, string TableName)
        {
            string strsql = "select max(" + FieldName + ")+1 from " + TableName;
            object obj = GetSingle(strsql);
            if (obj == null)
            {
                return 1;
            }
            else
            {
                return int.Parse(obj.ToString());
            }
        }

        public bool Exists(string strSql)
        {
            object obj = GetSingle(strSql);
            int cmdresult;
            if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
            {
                cmdresult = 0;
            }
            else
            {
                cmdresult = int.Parse(obj.ToString()); // Or maybe =0
            }
            if (cmdresult == 0)
            {
                return false;
            }
            else
            {
                return true;
            }
        }
        /// <summary>
        ///  Does the table exist 
        /// </summary>
        /// <param name="TableName"></param>
        /// <returns></returns>
        public bool TabExists(string TableName)
        {
            string strsql = "select count(*) from sysobjects where id = object_id(N'[" + TableName + "]') and OBJECTPROPERTY(id, N'IsUserTable') = 1";
            //string strsql = "SELECT count(*) FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[" + TableName + "]') AND type in (N'U')";
            object obj = GetSingle(strsql);
            int cmdresult;
            if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
            {
                cmdresult = 0;
            }
            else
            {
                cmdresult = int.Parse(obj.ToString());
            }
            if (cmdresult == 0)
            {
                return false;
            }
            else
            {
                return true;
            }
        }
        public bool Exists(string strSql, params SqlParameter[] cmdParms)
        {
            object obj = GetSingle(strSql, cmdParms);
            int cmdresult;
            if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
            {
                cmdresult = 0;
            }
            else
            {
                cmdresult = int.Parse(obj.ToString());
            }
            if (cmdresult == 0)
            {
                return false;
            }
            else
            {
                return true;
            }
        }
        #endregion

        #region   Easy to implement SQL sentence 

        /// <summary>
        ///  perform SQL sentence , Returns the number of records affected 
        /// </summary>
        /// <param name="SQLString">SQL sentence </param>
        /// <returns> Number of records affected </returns>
        public int ExecuteSql(string SQLString)
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                using (SqlCommand cmd = new SqlCommand(SQLString, connection))
                {
                    try
                    {
                        connection.Open();
                        int rows = cmd.ExecuteNonQuery();
                        return rows;
                    }
                    catch (System.Data.SqlClient.SqlException e)
                    {
                        connection.Close();
                        throw e;
                    }
                }
            }
        }

        public int ExecuteSqlByTime(string SQLString, int Times)
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                using (SqlCommand cmd = new SqlCommand(SQLString, connection))
                {
                    try
                    {
                        connection.Open();
                        cmd.CommandTimeout = Times;
                        int rows = cmd.ExecuteNonQuery();
                        return rows;
                    }
                    catch (System.Data.SqlClient.SqlException e)
                    {
                        connection.Close();
                        throw e;
                    }
                }
            }
        }

        /// <summary>
        ///  Execute more than one SQL sentence , Implement database transactions .
        /// </summary>
        /// <param name="SQLStringList"> multiple SQL sentence </param>		
        public int ExecuteSqlTran(List<String> SQLStringList)
        {
            using (SqlConnection conn = new SqlConnection(connectionString))
            {
                conn.Open();
                SqlCommand cmd = new SqlCommand();
                cmd.Connection = conn;
                SqlTransaction tx = conn.BeginTransaction();
                cmd.Transaction = tx;
                try
                {
                    int count = 0;
                    for (int n = 0; n < SQLStringList.Count; n++)
                    {
                        string strsql = SQLStringList[n];
                        if (strsql.Trim().Length > 1)
                        {
                            cmd.CommandText = strsql;
                            count += cmd.ExecuteNonQuery();
                        }
                    }
                    tx.Commit();
                    return count;
                }
                catch
                {
                    tx.Rollback();
                    return 0;
                }
            }
        }
        /// <summary>
        ///  Execute with a stored procedure parameter SQL sentence .
        /// </summary>
        /// <param name="SQLString">SQL sentence </param>
        /// <param name="content"> Parameter contents , For example, a field is a complex format article , There are special symbols , You can add... In this way </param>
        /// <returns> Number of records affected </returns>
        public int ExecuteSql(string SQLString, string content)
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                SqlCommand cmd = new SqlCommand(SQLString, connection);
                System.Data.SqlClient.SqlParameter myParameter = new System.Data.SqlClient.SqlParameter("@content", SqlDbType.NText);
                myParameter.Value = content;
                cmd.Parameters.Add(myParameter);
                try
                {
                    connection.Open();
                    int rows = cmd.ExecuteNonQuery();
                    return rows;
                }
                catch (System.Data.SqlClient.SqlException e)
                {
                    throw e;
                }
                finally
                {
                    cmd.Dispose();
                    connection.Close();
                }
            }
        }
        /// <summary>
        ///  Execute with a stored procedure parameter SQL sentence .
        /// </summary>
        /// <param name="SQLString">SQL sentence </param>
        /// <param name="content"> Parameter contents , For example, a field is a complex format article , There are special symbols , You can add... In this way </param>
        /// <returns> Number of records affected </returns>
        public object ExecuteSqlGet(string SQLString, string content)
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                SqlCommand cmd = new SqlCommand(SQLString, connection);
                System.Data.SqlClient.SqlParameter myParameter = new System.Data.SqlClient.SqlParameter("@content", SqlDbType.NText);
                myParameter.Value = content;
                cmd.Parameters.Add(myParameter);
                try
                {
                    connection.Open();
                    object obj = cmd.ExecuteScalar();
                    if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
                    {
                        return null;
                    }
                    else
                    {
                        return obj;
                    }
                }
                catch (System.Data.SqlClient.SqlException e)
                {
                    throw e;
                }
                finally
                {
                    cmd.Dispose();
                    connection.Close();
                }
            }
        }
        /// <summary>
        ///  Insert an image format field into the database ( Another example similar to the above )
        /// </summary>
        /// <param name="strSQL">SQL sentence </param>
        /// <param name="fs"> Image byte , The field type of the database is image The situation of </param>
        /// <returns> Number of records affected </returns>
        public int ExecuteSqlInsertImg(string strSQL, byte[] fs)
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                SqlCommand cmd = new SqlCommand(strSQL, connection);
                System.Data.SqlClient.SqlParameter myParameter = new System.Data.SqlClient.SqlParameter("@fs", SqlDbType.Image);
                myParameter.Value = fs;
                cmd.Parameters.Add(myParameter);
                try
                {
                    connection.Open();
                    int rows = cmd.ExecuteNonQuery();
                    return rows;
                }
                catch (System.Data.SqlClient.SqlException e)
                {
                    throw e;
                }
                finally
                {
                    cmd.Dispose();
                    connection.Close();
                }
            }
        }

        /// <summary>
        ///  Execute a statement that evaluates the results of a query , Return query results （object）.
        /// </summary>
        /// <param name="SQLString"> Compute query result statement </param>
        /// <returns> Query results （object）</returns>
        public object GetSingle(string SQLString)
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                using (SqlCommand cmd = new SqlCommand(SQLString, connection))
                {
                    try
                    {
                        connection.Open();
                        object obj = cmd.ExecuteScalar();
                        if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
                        {
                            return null;
                        }
                        else
                        {
                            return obj;
                        }
                    }
                    catch (System.Data.SqlClient.SqlException e)
                    {
                        connection.Close();
                        throw e;
                    }
                }
            }
        }
        public object GetSingle(string SQLString, int Times)
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                using (SqlCommand cmd = new SqlCommand(SQLString, connection))
                {
                    try
                    {
                        connection.Open();
                        cmd.CommandTimeout = Times;
                        object obj = cmd.ExecuteScalar();
                        if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
                        {
                            return null;
                        }
                        else
                        {
                            return obj;
                        }
                    }
                    catch (System.Data.SqlClient.SqlException e)
                    {
                        connection.Close();
                        throw e;
                    }
                }
            }
        }
        /// <summary>
        ///  Execute query statement , return SqlDataReader (  Be careful ： After calling this method , Be sure to be right SqlDataReader Conduct Close )
        /// </summary>
        /// <param name="strSQL"> Query statement </param>
        /// <returns>SqlDataReader</returns>
        public SqlDataReader ExecuteReader(string strSQL)
        {
            SqlConnection connection = new SqlConnection(connectionString);
            SqlCommand cmd = new SqlCommand(strSQL, connection);
            try
            {
                connection.Open();
                SqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
                return myReader;
            }
            catch (System.Data.SqlClient.SqlException e)
            {
                throw e;
            }

        }
        /// <summary>
        ///  Execute query statement , return DataSet
        /// </summary>
        /// <param name="SQLString"> Query statement </param>
        /// <returns>DataSet</returns>
        public DataSet Query(string SQLString)
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                DataSet ds = new DataSet();
                try
                {
                    connection.Open();
                    SqlDataAdapter command = new SqlDataAdapter(SQLString, connection);
                    command.Fill(ds, "ds");
                }
                catch (System.Data.SqlClient.SqlException ex)
                {
                    throw new Exception(ex.Message);
                }
                return ds;
            }
        }
        public DataSet Query(string SQLString, int Times)
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                DataSet ds = new DataSet();
                try
                {
                    connection.Open();
                    SqlDataAdapter command = new SqlDataAdapter(SQLString, connection);
                    command.SelectCommand.CommandTimeout = Times;
                    command.Fill(ds, "ds");
                }
                catch (System.Data.SqlClient.SqlException ex)
                {
                    throw new Exception(ex.Message);
                }
                return ds;
            }
        }

        #endregion

        #region  Execute... With parameters SQL sentence 

        /// <summary>
        ///  perform SQL sentence , Returns the number of records affected 
        /// </summary>
        /// <param name="SQLString">SQL sentence </param>
        /// <returns> Number of records affected </returns>
        public int ExecuteSql(string SQLString, params SqlParameter[] cmdParms)
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                using (SqlCommand cmd = new SqlCommand())
                {
                    try
                    {
                        PrepareCommand(cmd, connection, null, SQLString, cmdParms);
                        int rows = cmd.ExecuteNonQuery();
                        cmd.Parameters.Clear();
                        return rows;
                    }
                    catch (System.Data.SqlClient.SqlException e)
                    {
                        throw e;
                    }
                }
            }
        }


        /// <summary>
        ///  Execute more than one SQL sentence , Implement database transactions .
        /// </summary>
        /// <param name="SQLStringList">SQL Hash table of statement （key by sql sentence ,value Is the statement of SqlParameter[]）</param>
        public void ExecuteSqlTran(Hashtable SQLStringList)
        {
            using (SqlConnection conn = new SqlConnection(connectionString))
            {
                conn.Open();
                using (SqlTransaction trans = conn.BeginTransaction())
                {
                    SqlCommand cmd = new SqlCommand();
                    try
                    {
                        // loop 
                        foreach (DictionaryEntry myDE in SQLStringList)
                        {
                            string cmdText = myDE.Key.ToString();
                            SqlParameter[] cmdParms = (SqlParameter[])myDE.Value;
                            PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
                            int val = cmd.ExecuteNonQuery();
                            cmd.Parameters.Clear();
                        }
                        trans.Commit();
                    }
                    catch
                    {
                        trans.Rollback();
                        throw;
                    }
                }
            }
        }
        /// <summary>
        ///  Execute more than one SQL sentence , Implement database transactions .
        /// </summary>
        /// <param name="SQLStringList">SQL Hash table of statement （key by sql sentence ,value Is the statement of SqlParameter[]）</param>
        public int ExecuteSqlTran(System.Collections.Generic.List<CommandInfo> cmdList)
        {
            using (SqlConnection conn = new SqlConnection(connectionString))
            {
                conn.Open();
                using (SqlTransaction trans = conn.BeginTransaction())
                {
                    SqlCommand cmd = new SqlCommand();
                    try
                    {
                        int count = 0;
                        // loop 
                        foreach (CommandInfo myDE in cmdList)
                        {
                            string cmdText = myDE.CommandText;
                            SqlParameter[] cmdParms = (SqlParameter[])myDE.Parameters;
                            PrepareCommand(cmd, conn, trans, cmdText, cmdParms);

                            if (myDE.EffentNextType == EffentNextType.WhenHaveContine || myDE.EffentNextType == EffentNextType.WhenNoHaveContine)
                            {
                                if (myDE.CommandText.ToLower().IndexOf("count(") == -1)
                                {
                                    trans.Rollback();
                                    return 0;
                                }

                                object obj = cmd.ExecuteScalar();
                                bool isHave = false;
                                if (obj == null && obj == DBNull.Value)
                                {
                                    isHave = false;
                                }
                                isHave = Convert.ToInt32(obj) > 0;

                                if (myDE.EffentNextType == EffentNextType.WhenHaveContine && !isHave)
                                {
                                    trans.Rollback();
                                    return 0;
                                }
                                if (myDE.EffentNextType == EffentNextType.WhenNoHaveContine && isHave)
                                {
                                    trans.Rollback();
                                    return 0;
                                }
                                continue;
                            }
                            int val = cmd.ExecuteNonQuery();
                            count += val;
                            if (myDE.EffentNextType == EffentNextType.ExcuteEffectRows && val == 0)
                            {
                                trans.Rollback();
                                return 0;
                            }
                            cmd.Parameters.Clear();
                        }
                        trans.Commit();
                        return count;
                    }
                    catch
                    {
                        trans.Rollback();
                        throw;
                    }
                }
            }
        }
        /// <summary>
        ///  Execute more than one SQL sentence , Implement database transactions .
        /// </summary>
        /// <param name="SQLStringList">SQL Hash table of statement （key by sql sentence ,value Is the statement of SqlParameter[]）</param>
        public void ExecuteSqlTranWithIndentity(System.Collections.Generic.List<CommandInfo> SQLStringList)
        {
            using (SqlConnection conn = new SqlConnection(connectionString))
            {
                conn.Open();
                using (SqlTransaction trans = conn.BeginTransaction())
                {
                    SqlCommand cmd = new SqlCommand();
                    try
                    {
                        int indentity = 0;
                        // loop 
                        foreach (CommandInfo myDE in SQLStringList)
                        {
                            string cmdText = myDE.CommandText;
                            SqlParameter[] cmdParms = (SqlParameter[])myDE.Parameters;
                            foreach (SqlParameter q in cmdParms)
                            {
                                if (q.Direction == ParameterDirection.InputOutput)
                                {
                                    q.Value = indentity;
                                }
                            }
                            PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
                            int val = cmd.ExecuteNonQuery();
                            foreach (SqlParameter q in cmdParms)
                            {
                                if (q.Direction == ParameterDirection.Output)
                                {
                                    indentity = Convert.ToInt32(q.Value);
                                }
                            }
                            cmd.Parameters.Clear();
                        }
                        trans.Commit();
                    }
                    catch
                    {
                        trans.Rollback();
                        throw;
                    }
                }
            }
        }
        /// <summary>
        ///  Execute more than one SQL sentence , Implement database transactions .
        /// </summary>
        /// <param name="SQLStringList">SQL Hash table of statement （key by sql sentence ,value Is the statement of SqlParameter[]）</param>
        public void ExecuteSqlTranWithIndentity(Hashtable SQLStringList)
        {
            using (SqlConnection conn = new SqlConnection(connectionString))
            {
                conn.Open();
                using (SqlTransaction trans = conn.BeginTransaction())
                {
                    SqlCommand cmd = new SqlCommand();
                    try
                    {
                        int indentity = 0;
                        // loop 
                        foreach (DictionaryEntry myDE in SQLStringList)
                        {
                            string cmdText = myDE.Key.ToString();
                            SqlParameter[] cmdParms = (SqlParameter[])myDE.Value;
                            foreach (SqlParameter q in cmdParms)
                            {
                                if (q.Direction == ParameterDirection.InputOutput)
                                {
                                    q.Value = indentity;
                                }
                            }
                            PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
                            int val = cmd.ExecuteNonQuery();
                            foreach (SqlParameter q in cmdParms)
                            {
                                if (q.Direction == ParameterDirection.Output)
                                {
                                    indentity = Convert.ToInt32(q.Value);
                                }
                            }
                            cmd.Parameters.Clear();
                        }
                        trans.Commit();
                    }
                    catch
                    {
                        trans.Rollback();
                        throw;
                    }
                }
            }
        }
        /// <summary>
        ///  Execute a statement that evaluates the results of a query , Return query results （object）.
        /// </summary>
        /// <param name="SQLString"> Compute query result statement </param>
        /// <returns> Query results （object）</returns>
        public object GetSingle(string SQLString, params SqlParameter[] cmdParms)
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                using (SqlCommand cmd = new SqlCommand())
                {
                    try
                    {
                        PrepareCommand(cmd, connection, null, SQLString, cmdParms);
                        object obj = cmd.ExecuteScalar();
                        cmd.Parameters.Clear();
                        if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
                        {
                            return null;
                        }
                        else
                        {
                            return obj;
                        }
                    }
                    catch (System.Data.SqlClient.SqlException e)
                    {
                        throw e;
                    }
                }
            }
        }

        /// <summary>
        ///  Execute query statement , return SqlDataReader (  Be careful ： After calling this method , Be sure to be right SqlDataReader Conduct Close )
        /// </summary>
        /// <param name="strSQL"> Query statement </param>
        /// <returns>SqlDataReader</returns>
        public SqlDataReader ExecuteReader(string SQLString, params SqlParameter[] cmdParms)
        {
            SqlConnection connection = new SqlConnection(connectionString);
            SqlCommand cmd = new SqlCommand();
            try
            {
                PrepareCommand(cmd, connection, null, SQLString, cmdParms);
                SqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
                cmd.Parameters.Clear();
                return myReader;
            }
            catch (System.Data.SqlClient.SqlException e)
            {
                throw e;
            }
        }

        /// <summary>
        ///  Execute query statement , return DataSet
        /// </summary>
        /// <param name="SQLString"> Query statement </param>
        /// <returns>DataSet</returns>
        public DataSet Query(string SQLString, params SqlParameter[] cmdParms)
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                SqlCommand cmd = new SqlCommand();
                PrepareCommand(cmd, connection, null, SQLString, cmdParms);
                using (SqlDataAdapter da = new SqlDataAdapter(cmd))
                {
                    DataSet ds = new DataSet();
                    try
                    {
                        da.Fill(ds, "ds");
                        cmd.Parameters.Clear();
                    }
                    catch (System.Data.SqlClient.SqlException ex)
                    {
                        throw new Exception(ex.Message);
                    }
                    return ds;
                }
            }
        }

        private void PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, string cmdText, SqlParameter[] cmdParms)
        {
            if (conn.State != ConnectionState.Open)
                conn.Open();
            cmd.Connection = conn;
            cmd.CommandText = cmdText;
            if (trans != null)
                cmd.Transaction = trans;
            cmd.CommandType = CommandType.Text;//cmdType;
            if (cmdParms != null)
            {
                foreach (SqlParameter parameter in cmdParms)
                {
                    if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) &&
                        (parameter.Value == null))
                    {
                        parameter.Value = DBNull.Value;
                    }
                    cmd.Parameters.Add(parameter);
                }
            }
        }

        #endregion

        #region  Stored procedure operations 

        /// <summary>
        ///  Execute stored procedures , return SqlDataReader (  Be careful ： After calling this method , Be sure to be right SqlDataReader Conduct Close )
        /// </summary>
        /// <param name="storedProcName"> Stored procedure name </param>
        /// <param name="parameters"> Stored procedure parameters </param>
        /// <returns>SqlDataReader</returns>
        public SqlDataReader RunProcedure(string storedProcName, IDataParameter[] parameters)
        {
            SqlConnection connection = new SqlConnection(connectionString);
            SqlDataReader returnReader;
            connection.Open();
            SqlCommand command = BuildQueryCommand(connection, storedProcName, parameters);
            command.CommandType = CommandType.StoredProcedure;
            returnReader = command.ExecuteReader(CommandBehavior.CloseConnection);
            return returnReader;

        }

        /// <summary>
        ///  Execute stored procedures 
        /// </summary>
        /// <param name="storedProcName"> Stored procedure name </param>
        /// <param name="parameters"> Stored procedure parameters </param>
        /// <param name="tableName">DataSet Table name in result </param>
        /// <returns>DataSet</returns>
        public DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName)
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                DataSet dataSet = new DataSet();
                connection.Open();
                SqlDataAdapter sqlDA = new SqlDataAdapter();
                sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
                sqlDA.Fill(dataSet, tableName);
                connection.Close();
                return dataSet;
            }
        }

        public DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName, int Times)
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                DataSet dataSet = new DataSet();
                connection.Open();
                SqlDataAdapter sqlDA = new SqlDataAdapter();
                sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
                sqlDA.SelectCommand.CommandTimeout = Times;
                sqlDA.Fill(dataSet, tableName);
                connection.Close();
                return dataSet;
            }
        }

        /// <summary>
        ///  structure  SqlCommand  object ( Used to return a result set , Instead of an integer value )
        /// </summary>
        /// <param name="connection"> Database connection </param>
        /// <param name="storedProcName"> Stored procedure name </param>
        /// <param name="parameters"> Stored procedure parameters </param>
        /// <returns>SqlCommand</returns>
        private SqlCommand BuildQueryCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters)
        {
            SqlCommand command = new SqlCommand(storedProcName, connection);
            command.CommandType = CommandType.StoredProcedure;
            foreach (SqlParameter parameter in parameters)
            {
                if (parameter != null)
                {
                    //  Check the output parameters of unassigned values , Allocate it to DBNull.Value.
                    if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) &&
                        (parameter.Value == null))
                    {
                        parameter.Value = DBNull.Value;
                    }
                    command.Parameters.Add(parameter);
                }
            }
            return command;
        }

        /// <summary>
        ///  Execute stored procedures , Returns the number of rows affected 		
        /// </summary>
        /// <param name="storedProcName"> Stored procedure name </param>
        /// <param name="parameters"> Stored procedure parameters </param>
        /// <param name="rowsAffected"> Number of rows affected </param>
        /// <returns></returns>
        public int RunProcedure(string storedProcName, IDataParameter[] parameters, out int rowsAffected)
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                int result;
                connection.Open();
                SqlCommand command = BuildIntCommand(connection, storedProcName, parameters);
                rowsAffected = command.ExecuteNonQuery();
                result = (int)command.Parameters["ReturnValue"].Value;            
                return result;
            }
        }

        /// <summary>
        ///  establish  SqlCommand  Object instances ( Used to return an integer value )	
        /// </summary>
        /// <param name="storedProcName"> Stored procedure name </param>
        /// <param name="parameters"> Stored procedure parameters </param>
        /// <returns>SqlCommand  Object instances </returns>
        private SqlCommand BuildIntCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters)
        {
            SqlCommand command = BuildQueryCommand(connection, storedProcName, parameters);
            command.Parameters.Add(new SqlParameter("ReturnValue",
                SqlDbType.Int, 4, ParameterDirection.ReturnValue,
                false, 0, 0, string.Empty, DataRowVersion.Default, null));
            return command;
        }
        #endregion

        #region IDisposable  member 

        public void Dispose()
        {
            connectionString = string.Empty;
        }

        #endregion
    }
}

 4、EF And the use of extension classes

/// <summary>
        ///  Parse into database 
        /// </summary>
        /// <param name="ds"></param>
        /// <param name="factoryNo"></param>
        /// <param name="db"></param>
        public static void XmlFile2DataBase(ref DataSet ds, string factoryNo, XXX_DBEntities db)
        {
            var dtProductLine = ds.Tables["line"];
            var dtLinkData = ds.Tables["bc"];
            // There have been xml Missing fields ,84K The size of zip In the bag xml bc Table only 3 A field , No batch number and date . If it is this file, skip .
            if (dtLinkData.Columns.Count != 5)
                return;
            string outBoxNo = dtLinkData.Rows[0]["out"].ToString();
            // Check for duplicate records , If there is one, ignore , As long as there is a box code repetition in this file , It indicates that this file is uploaded repeatedly . Transaction control to file .
            decimal cnt = decimal.Parse(db.AdoExecuteScalar(string.Format("select count(*) as cnt from  SC_PRODUCTSOURCE s where s.outbox_dnacode = '{0}'", outBoxNo)).ToString());
            if (cnt > 0)
            {
                return;
            }
            var dt = db.GetTmpNewDataTable();
            #region  Prepare temporary data , And use OracleBulkCopy Batch insert , Once per production line 
            foreach (DataRow dr in dtProductLine.Rows)
            {
                if (!string.IsNullOrEmpty(dr["pid"].ToString()))
                {
                    dt.Rows.Clear();
                    int prdCode = int.Parse(dr["psid"].ToString());
                    var product = db.ProductInfo.Where(p => p.PRODUCT_CODE == prdCode).FirstOrDefault();
                    string prdName = product.PRODUCT_CNNAME;
                    string prdBrandName = product.PRD_BRAND;
                    DataView dv = dtLinkData.DefaultView;
                    dv.RowFilter = string.Format("data_Id={0}", dr["line_Id"].ToString());
                    foreach (DataRowView itemRow in dv)
                    {
                        string[] itemList = itemRow["bc_Text"].ToString().Split(",".ToCharArray());
                        string batchNo = itemRow["batchno"].ToString();
                        string outBoxNoSub = itemRow["out"].ToString();
                        for (int idx = 0; idx < itemList.Length; idx++)
                        {
                            DateTime dtProduct = new DateTime(1901, 01, 01);
                            DateTime.TryParse(itemRow["maketime"].ToString(), out dtProduct);
                            var drProductLinkData = dt.NewRow();
                            #region  A box of production data 
                            drProductLinkData["PRODUCTSOURCEID"] = Guid.NewGuid().ToString("N").ToUpper();
                            drProductLinkData["FACTORYID"] = factoryNo;
                            drProductLinkData["PRDLINEID"] = dr["no"].ToString();
                            drProductLinkData["MACRANDOMCODE"] = itemList[idx];
                            drProductLinkData["PRODUCTBATCHIDX"] = batchNo;
                            drProductLinkData["LASERDNA_CODE"] = "";
                            drProductLinkData["PRODUCTNO"] = int.Parse(dr["psid"].ToString());
                            drProductLinkData["PRODUCTNAME"] = prdName;
                            drProductLinkData["PRODUCTTYPENAME"] = prdBrandName;
                            drProductLinkData["PRODUCTDATE"] = dtProduct;
                            drProductLinkData["PRINTCODEDT"] = dtProduct;
                            drProductLinkData["FACTORYSHIFTNO"] = "";
                            drProductLinkData["OUTBOX_DNACODE"] = outBoxNoSub;
                            drProductLinkData["VIRTUALBALECODE"] = "";
                            drProductLinkData["SENDTONDC_DT"] = DateTime.Now;
                            drProductLinkData["FAC_NO"] = factoryNo;
                            drProductLinkData["PRODUCTVERSION"] = DateTime.Now;
                            #endregion
                            dt.Rows.Add(drProductLinkData);
                        }
                    }
                    if (dt.Rows.Count > 0)
                    {
                        db.ExecuteSqlBulkCopy(dt);
                    }
                }
            }
            #endregion
        }

4、 Program running effect and screenshot

1、 journal

2、 Screenshot

no , Because the program is too efficient , There are no files to parse for a while . ha-ha

Conclusion ： You don't need a fixed mindset to do a project , For example, we must have a layered architecture , It must be something X Technology , Must be highly scalable 、 High reusability . Small projects , Fast 、 Stable 、 Efficiency and maintainability are the key points to be considered . Martial arts in the world , Fast break not only . ha-ha ...

PS:CSS The style is the garden friend's , I didn't write the style in the blog settings , Is on the page HTML Add custom styles in mode .