当前位置：网站首页>Custom Configuration Sections

Custom Configuration Sections

2022-07-28 12:58:00 【51CTO】

       
       <%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>
       
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "​​http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd​​">
       
<html xmlns="​​http://www.w3.org/1999/xhtml​​​" >
       
<head runat="server">
       
    <title>Custom Configuration Sections</title>
       
</head>
       
<body>
       
    <form id="form1" runat="server">
       
    <div>
       
      <h1>Custom Configuration Sections</h1>
       
       <asp:Label ID="lblTime" runat="server" />
       
       <br />
       
       <asp:Label ID="lblTest" runat="server" />
       
       <br />
       
       <asp:Label ID="lblContent" runat="server" />
       
       <br />
       
       <asp:GridView ID="gv" runat="server" />
       
    </div>
       
    </form>
       
</body>
       
</html>File: Default.aspx.cs
       
using System;
       
using System.Data;
       
using System.Configuration;
       
using System.Web;
       
using System.Web.Security;
       
using System.Web.UI;
       
using System.Web.UI.WebControls;
       
using System.Web.UI.WebControls.WebParts;
       
using System.Web.UI.HtmlControls;
       
using System.Collections;public partial class _Default : System.Web.UI.Page 
       
{
       
    protected void Page_Load(object sender, EventArgs e)
       
    {
       
       lblTime.Text = "Posted at " + DateTime.Now.ToLongTimeString();
       
       if (!IsPostBack)
       
       {
       
          string strTest;
       
          strTest = ((Hashtable)ConfigurationManager.GetSection("altDB"))["Test"].ToString();
       
          lblTest.Text = strTest;          lblContent.Text = ((Hashtable)ConfigurationManager.GetSection("altDB"))["Content"].ToString();
       
          CreateGrid();
       
       }
      
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
44.

       
       private void CreateGrid()
       
   {
       
      DataSet dsGrid = new DataSet();
       
      dsGrid = (DataSet)ConfigurationManager.GetSection("system.web/DataSetSectionHandler");
       
      gv.DataSource = dsGrid.Tables[0];
       
      gv.DataBind();
       
   }
       
}File: SectionHandlers.cs
       
using System;
       
using System.Data;
       
using System.Data.SqlClient;
       
using System.Configuration;
       
using System.Web;
       
using System.Web.Security;
       
using System.Web.UI;
       
using System.Web.UI.WebControls;
       
using System.Web.UI.WebControls.WebParts;
       
using System.Web.UI.HtmlControls;public class DataSetSectionHandler : IConfigurationSectionHandler
       
{
       
   public Object Create(Object parent,Object configContext,System.Xml.XmlNode section)
       
   {
       
      string strSql;
       
      strSql = section.Attributes.Item(0).Value;      string connectionString = "server=Local; uid=sa; pwd=password; database=Northwind";
       
      SqlDataAdapter da = new SqlDataAdapter(strSql,connectionString);
       
      DataSet dsData = new DataSet();
       
      da.Fill(dsData, "Customers");
       
      return dsData;
       
   }
       
}
      
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.

       
       File: Web.Config
       
<?xml version="1.0"?>
       
<configuration xmlns="​​​http://schemas.microsoft.com/.NetConfiguration/v2.0​​​">
       
  <configSections>
       
    <section name="altDB" type="System.Configuration.DictionarySectionHandler, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
       
    <sectionGroup name="system.web">
       
      <section name="DataSetSectionHandler" type="DataSetSectionHandler,SectionHandlers" />
       
    </sectionGroup>
       
  </configSections>  <altDB>
       
    <add key="Test" value=" SERVER=MyServer;DATABASE=Test;UID=myID;PWD=secret;" />
       
    <add key="Content" value=" SERVER=MyServer;DATABASE=Content;UID=myID;PWD=secret;" />
       
  </altDB>  <appSettings/>
       
  <connectionStrings/>
       
  <system.web>
       
    <compilation debug="true"/>
       
    <authentication mode="Windows" />
       
    <DataSetSectionHandler  str="Select CompanyName,ContactName,City from Customers"  />
       
  </system.web>
       
</configuration>
      
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.