5、 Improvement of inventory query function

One 、 The establishment of database

Due to the query function and the previous Warehousing management function The databases used are the same , Still used here yy_textile surface
stay fiber_yy Create... Under database yy_textile surface

Initial database information

Two 、 Page perfection

I won't show you on the login page , The previous blog posts also introduced

query Query page

main_page The function of the page is improved

3、 ... and 、 Code implementation

query Query page

using System;
using System.IO;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.OleDb;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.Sql;
using System.Data.SqlClient;

namespace fiber_yy
{
    
    public partial class query : Form
    {
    
        private DataSet dsall;
        public string constr = "server=CY-20190824RMES;Initial Catalog=fiber_yy;User ID=sa;pwd=beyond";
        private SqlDataAdapter mDataAdapter;

        public query()
        {
    
            InitializeComponent();
            comboBox1.Items.Add(" Query according to the fabric name ");
            comboBox1.Items.Add(" Query according to the product number ");
        }

        private void button1_Click(object sender, EventArgs e)
        {
    
            try
            {
    
                SqlConnection conn = new SqlConnection(constr);
                conn = new SqlConnection(constr);
                mDataAdapter = new SqlDataAdapter("SELECT name AS ' Name of textile ',number AS ' Textile product No ',warp_density AS ' Density ' ,weft_density AS ' Weft density ',warp_linear_density AS ' Warp yarn density ',weft_linear_density AS ' Weft yarn density ',material AS ' Ingredients ',square_meter_weight AS ' Weight per square meter ',width_of_cloth AS ' width of cloth ',horse_length AS ' Horse length ',organization AS ' Organization used ',stock AS ' Inventory ' FROM yy_textile", conn);
                dsall = new DataSet();
                mDataAdapter.Fill(dsall, "hard");
                dataGridView1.DataSource = dsall.Tables["hard"];
            }
            catch 
            {
    
                MessageBox.Show(" Read failed , Please check if the fabric is present ");
            }

            
        }

        private void button2_Click(object sender, EventArgs e)
        {
    
            this.Hide();
            new main_page().Show();
        }

        private void button3_Click(object sender, EventArgs e)
        {
    
            try
            {
    
                string model = comboBox1.SelectedItem.ToString();
                string command = textBox1.Text;
                

                byte[] MyData = new byte[0];
                SqlConnection conn = new SqlConnection(constr);
                conn.Open();
                SqlCommand cmd = new SqlCommand();
                cmd.Connection = conn;
                //cmd.CommandText = "select * from yy_textile where '" + model + "'='" + command + "'"; //sql Statement is executed according to specified conditions 

                if (model == " Query according to the fabric name ")
                {
    
                    cmd.CommandText = "select * from yy_textile where name='" + command + "'";
                    model = "SELECT name AS ' Name of textile ',number AS ' Textile product No ',warp_density AS ' Density ' ,weft_density AS ' Weft density ',warp_linear_density AS ' Warp yarn density ',weft_linear_density AS ' Weft yarn density ',material AS ' Ingredients ',square_meter_weight AS ' Weight per square meter ',width_of_cloth AS ' width of cloth ',horse_length AS ' Horse length ',organization AS ' Organization used ',stock AS ' Inventory ' from yy_textile where name='" + command + "'";
                }
                if (model == " Query according to the product number ")
                {
    
                    cmd.CommandText = "select * from yy_textile where number='" + command + "'";
                    model = "SELECT name AS ' Name of textile ',number AS ' Textile product No ',warp_density AS ' Density ' ,weft_density AS ' Weft density ',warp_linear_density AS ' Warp yarn density ',weft_linear_density AS ' Weft yarn density ',material AS ' Ingredients ',square_meter_weight AS ' Weight per square meter ',width_of_cloth AS ' width of cloth ',horse_length AS ' Horse length ',organization AS ' Organization used ',stock AS ' Inventory ' from yy_textile where number='" + command + "'";
                }



                SqlDataReader sdr = cmd.ExecuteReader();
                sdr.Read();
                object o = sdr["picture"];
                MyData = (byte[])sdr["picture"];// Read the bit stream of the first picture 
                MemoryStream memoryStream = null;
                memoryStream = new MemoryStream(MyData);
                pictureBox1.Image = Image.FromStream(memoryStream);// Assign pictures to pictureBox1 Control 
                MessageBox.Show(" Read successful ");

                
                conn = new SqlConnection(constr);
                mDataAdapter = new SqlDataAdapter(model, conn);
                
                dsall = new DataSet();
                mDataAdapter.Fill(dsall, "hard");
                dataGridView1.DataSource = dsall.Tables["hard"];


            }
            catch
            {
    
                MessageBox.Show(" Read failed , Please check if the fabric is present ");
            }
        }
    }
}

main_page page

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace fiber_yy
{
    
    public partial class main_page : Form
    {
    
        public main_page()
        {
    
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
    
            MessageBox.Show(" Quit successfully ");
            this.Close();
            new Form1().Show();
        }

        private void button2_Click(object sender, EventArgs e)
        {
    
            this.Close();
            new warehousing().Show();
        }

        private void button3_Click(object sender, EventArgs e)
        {
    
            this.Close();
            new shipment().Show();
        }

        private void button4_Click(object sender, EventArgs e)
        {
    
            this.Close();
            new query().Show();
        }
    }
}

Four 、 Effect demonstration

The program runs

I won't demonstrate if I register , Please refer to the previous blog posts
from yy_user Find an account and password in the table , Direct user login


Login successful

Entry system

demonstration Inventory query

Refer to all fabric information included

Accurate search

Query according to the fabric name

Query according to the product number