利用GridView显示主细表并添加打开、关闭，删除功能

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利用GridView显示主细表并添加打开、关闭，删除功能

2013年04月14日 ⁄ 综合 ⁄ 共 10414字 ⁄ 字号小中大 ⁄ 评论关闭

本文例子使用嵌套的 GridView 来显示主细表，并使用 JavaScript 来控制明细表的显示与隐藏。值得注意的是：在 GridView 的 RowDataBound 的事件里，不要多次执行数据库的打开，否则，将很快会导致连接数已满的问题。

例子中的数据库，请参照《 ASP.NET 2.0应用开发技术》一书中附带的光盘中的数据库。

查看例子

代码:

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

<!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 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>

</head>
<body>
  <form id="form1" runat="server">
    <asp:GridView ID="MasterGridView" runat="server" AutoGenerateColumns="false" Width="760px"
      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"
                Width="100%" HorizontalAlign="left">
                <HeaderStyle BackColor="#9999FF" />
                <Columns>
                  <asp:TemplateField HeaderText="文章名称">
                    <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}"
                    ItemStyle-Width="100px" ItemStyle-HorizontalAlign="Center" />
                </Columns>
              </asp:GridView>
            </div>
          </ItemTemplate>
        </asp:TemplateField>
      </Columns>
    </asp:GridView>
  </form>
</body>
</html>

C#：

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

public partial class Exam_GridViewNested : 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();
     }
    }
  }
}

VB.NET：

Private ConnectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|aspxWeb.mdb;Persist Security Info=True"
Private cn1 As OleDbConnection

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
If Not Page.IsPostBack Then
   Dim cn As OleDbConnection = New OleDbConnection(ConnectionString)
   cn.Open
   cn1 = New OleDbConnection(ConnectionString)
   cn1.Open
   Dim cmd As OleDbCommand = New OleDbCommand("select * from [Subject]", cn)
   Dim dr As OleDbDataReader = cmd.ExecuteReader(CommandBehavior.CloseConnection)
   MasterGridView.DataSource = dr
   MasterGridView.DataBind
   dr.Close
   cmd.Dispose
   cn.Dispose
   cn1.Dispose
   cn = cn1 = Nothing
End If
End Sub

Protected Sub MasterGridView_RowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs)
If e.Row.RowType = DataControlRowType.DataRow Then
   Dim oGridView As GridView = CType(e.Row.FindControl("DetailGridView"), GridView)
   If Not (oGridView Is Nothing) Then
     Dim cmd As OleDbCommand = New OleDbCommand("select top 10 * from Document Where pid = " + MasterGridView.DataKeys(e.Row.RowIndex).Value, cn1)
     Dim dr1 As OleDbDataReader = cmd.ExecuteReader
     oGridView.DataSource = dr1
     oGridView.DataBind
     dr1.Close
     cmd.Dispose
   End If
End If
End Sub

本文是利用GridView显示主细表并添加打开、关闭功能的扩展。

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：）

查看例子

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>

</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;

      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：<font color='red'>" + a.DataKeys[e.RowIndex].Value.ToString() + "</font>    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。

【上篇】初识MVVM(一)
【下篇】Qt实现areo毛玻璃效果的类,以及使用方法:

作者: bvfgrrr

该日志由 bvfgrrr 于11年前发表在综合分类下，最后更新于 2013年04月14日.
转载请注明: 利用GridView显示主细表并添加打开、关闭，删除功能 | 学步园 +复制链接

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利用GridView显示主细表并添加打开、关闭，删除功能

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