利用GridView显示主细表并添加删除、打开、关闭功能（续）-优快云博客

本文介绍如何在ASP.NET中使用GridView控件显示主细表数据，并实现了在子GridView中的删除功能。通过示例代码展示了如何加载数据、绑定数据及执行删除操作。

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有网友在论坛上询问：如何在使用GridView显示主细表时添加删除功能？其实，如果单个GridView能够实现删除对话，N个GridView嵌套也没有任何问题。下面就将例子粘贴如下，望各位需要的朋友仔细揣摩一下，道理很简单的：）

aspx ：

<% @ Page Language = " C# " AutoEventWireup = " true " CodeFile = " Default2.aspx.cs " Inherits = " Default2 " %>

DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
  <title>利用GridView显示主细表并添加打开、关闭功能 title>
  <style type="text/css">
  td,div,a {font-size:12px}
   style>

  <script type="text/javascript">
  //
  function ShowHidden(sid,ev)
  {
    ev = ev || window.event;
    var target = ev.target || ev.srcElement;
    var oDiv = document.getElementById("div" + sid);
    oDiv.style.display = oDiv.style.display == "none"?"block":"none";
    target.innerHTML = oDiv.style.display == "none"?"显示":"隐藏";
  }
  //]]>
   script>

head>
<body>
  <form id="form1" runat="server">
    <asp:GridView ID="MasterGridView" runat="server" AutoGenerateColumns="false" Width="780px"
      BorderWidth="1" OnRowDataBound="MasterGridView_RowDataBound" DataKeyNames="id"
      ShowHeader="false">
      <Columns>
        <asp:TemplateField>
          <ItemTemplate>
            <div style="width: 100%; padding: 2px; font-weight: bold; background-color: #DEDEDE;
              float: left">
              <span style="float: left">栏目名称：<%#Eval("Title") %> span><span style="float: right;
                color: Red; cursor: pointer" onclick="ShowHidden('<%#Eval("id") %>',event)">隐藏 span> div>
            <div style="background-color: #FFF; padding-left: 60px; clear: both" id="div<%#Eval("id") %>">
              <asp:GridView ID="DetailGridView" runat="server" AutoGenerateColumns="false" ShowHeader="true"
                HorizontalAlign="left" DataKeyNames="id" AutoGenerateDeleteButton="true" OnRowCommand="DetailGridView_RowCommand"
                OnRowDeleting="DetailGridView_RowDeleting" Width="720px">
                <HeaderStyle BackColor="#9999FF" />
                <Columns>
                  <asp:TemplateField HeaderText="文章名称" HeaderStyle-Width="540px">
                    <ItemTemplate>
                      <a href="/article/<%#Eval("objectGuid") %>/read.aspx">
                        <%#Eval("Title") %>
                       a>[<%# Eval("HitCount") %>]
                     ItemTemplate>
                   asp:TemplateField>
                  <asp:BoundField HeaderText="发布日期" DataField="CreateDate" HtmlEncode="false" DataFormatString="{0:yyyy年MM月dd日}"
                    HeaderStyle-Width="100px" ItemStyle-HorizontalAlign="Center" />
                  <asp:CommandField DeleteText="删除" ShowDeleteButton="true" ButtonType="Button" HeaderStyle-Width="40px" />
                 Columns>
               asp:GridView>
             div>
           ItemTemplate>
         asp:TemplateField>
       Columns>
     asp:GridView>
   form>
body>
html>

C#：

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.OleDb;
using System.Web.UI.HtmlControls;

public partial class Default2 : System.Web.UI.Page
{
   string ConnectionString = @" Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|aspxWeb.mdb;Persist Security Info=True " ;
  OleDbConnection cn1;

   protected void Page_Load( object sender, EventArgs e )
  {
     if ( ! Page.IsPostBack)
    {
      OleDbConnection cn = new OleDbConnection(ConnectionString);
      cn.Open();
      cn1 = new OleDbConnection(ConnectionString);
      cn1.Open();
      OleDbCommand cmd = new OleDbCommand( " select * from [Subject] " , cn);
      OleDbDataReader dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
      MasterGridView.DataSource = dr;
      MasterGridView.DataBind();
      dr.Close();
      cmd.Dispose();
      cn.Dispose();
      cn1.Dispose();
      cn = cn1 = null ;
    }
  }
   protected void MasterGridView_RowDataBound( object sender, GridViewRowEventArgs e )
  {
     if (e.Row.RowType == DataControlRowType.DataRow)
    {

      GridView oGridView = (GridView)e.Row.FindControl( " DetailGridView " );
       if (oGridView != null )
      {
        OleDbCommand cmd = new OleDbCommand( " select top 10 * from Document Where pid = " + MasterGridView.DataKeys[e.Row.RowIndex].Value, cn1);
        OleDbDataReader dr1 = cmd.ExecuteReader();
        oGridView.DataSource = dr1;
        oGridView.DataBind();
        dr1.Close();
        cmd.Dispose();
      }
    }
  }

   protected void DetailGridView_RowDeleting( object sender, GridViewDeleteEventArgs e )
  {
    GridView a = (GridView)sender;
    Response.Write( " 您要删除的记录是： " + a.DataKeys[e.RowIndex].Value.ToString() + "     TODO：执行删除动作 " );
     // TODO：执行删除动作
  }
   protected void DetailGridView_RowCommand( object sender, GridViewCommandEventArgs e )
  {

  }
}

注意：EnableViewState="true" 是必须的。