用户控件(UserControl) 使用事件 Ver2
在前一篇中http://www.cnblogs.com/insus/archive/2011/11/16/2251314.html，Insus.NET实作了一个简单在asp.net网页上使用委托与事件的例子。
这次Insus.NET想重构一下页面上的操作按钮(如下)，应用方面如：http://www.cnblogs.com/insus/archive/2011/10/09/2202301.html 或者http://www.cnblogs.com/insus/archive/2011/10/27/2226703.html
把这些操作铵钮放在一个UserControl(用户控件)里，页面需要时，接进去即可。这个用户控件，可参考，每个Button分别设定CommandName和写同一个OnCommand事件。
InsusUserControl.ascx
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="InsusUserControl.ascx.cs"
Inherits="InsusUserControl" %>
<asp:Button ID="ButtonInsert" runat="server" Text="Insert" CommandName="Insert" OnCommand="Execute_Command" />
<asp:Button ID="ButtonEdit" runat="server" Text="Edit" CommandName="Edit" OnCommand="Execute_Command" />
<asp:Button ID="ButtonUpdate" runat="server" Text="Update" CommandName="Update" OnCommand="Execute_Command" />
<asp:Button ID="ButtonCancel" runat="server" Text="Cancel" CommandName="Cancel" OnCommand="Execute_Command" />
<asp:Button ID="ButtonDelete" runat="server" Text="Delete" CommandName="Delete" OnCommand="Execute_Command" />
Inherits="InsusUserControl" %>
<asp:Button ID="ButtonInsert" runat="server" Text="Insert" CommandName="Insert" OnCommand="Execute_Command" />
<asp:Button ID="ButtonEdit" runat="server" Text="Edit" CommandName="Edit" OnCommand="Execute_Command" />
<asp:Button ID="ButtonUpdate" runat="server" Text="Update" CommandName="Update" OnCommand="Execute_Command" />
<asp:Button ID="ButtonCancel" runat="server" Text="Cancel" CommandName="Cancel" OnCommand="Execute_Command" />
<asp:Button ID="ButtonDelete" runat="server" Text="Delete" CommandName="Delete" OnCommand="Execute_Command" />
InsusUserControl.ascx.cs:
InsusUserControl.ascx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class InsusUserControl : System.Web.UI.UserControl
{
//宣告一个事件
public event CommandEventHandler Execute;
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Execute_Command(object sender, CommandEventArgs e)
{
if (Execute != null)
{
Execute(this, e);
}
}
}
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class InsusUserControl : System.Web.UI.UserControl
{
//宣告一个事件
public event CommandEventHandler Execute;
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Execute_Command(object sender, CommandEventArgs e)
{
if (Execute != null)
{
Execute(this, e);
}
}
}
下面是页面应用这个用户控件，在aspx在设计模式下，拉这个用户控件到页面中来，当然你也可以在aspx.cs内写代码动态添加：
Default.aspx:
View Code
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ Register Src="InsusUserControl.ascx" TagName="InsusUserControl" TagPrefix="uc1" %>
<!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></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<uc1:InsusUserControl ID="InsusUserControl1" runat="server" />
</div>
</form>
</body>
</html>
<%@ Register Src="InsusUserControl.ascx" TagName="InsusUserControl" TagPrefix="uc1" %>
<!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></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<uc1:InsusUserControl ID="InsusUserControl1" runat="server" />
</div>
</form>
</body>
</html>
Default.aspx.cs:
View Code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
this.InsusUserControl1.Execute += new CommandEventHandler(InsusUserControl1_Execute);
}
protected void Page_Load(object sender, EventArgs e)
{
}
public void InsusUserControl1_Execute(object sender, CommandEventArgs e)
{
switch (e.CommandName)
{
case "Insert":
ShowMessage(e.CommandName);
break;
case "Edit":
ShowMessage(e.CommandName);
break;
case "Update":
ShowMessage(e.CommandName);
break;
case "Cancel":
ShowMessage(e.CommandName);
break;
case "Delete":
ShowMessage(e.CommandName);
break;
}
}
private void ShowMessage(string buttonName)
{
Response.Write("你点击了" + buttonName + "铵钮。");
}
}
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
this.InsusUserControl1.Execute += new CommandEventHandler(InsusUserControl1_Execute);
}
protected void Page_Load(object sender, EventArgs e)
{
}
public void InsusUserControl1_Execute(object sender, CommandEventArgs e)
{
switch (e.CommandName)
{
case "Insert":
ShowMessage(e.CommandName);
break;
case "Edit":
ShowMessage(e.CommandName);
break;
case "Update":
ShowMessage(e.CommandName);
break;
case "Cancel":
ShowMessage(e.CommandName);
break;
case "Delete":
ShowMessage(e.CommandName);
break;
}
}
private void ShowMessage(string buttonName)
{
Response.Write("你点击了" + buttonName + "铵钮。");
}
}
动画演示：
另外动态添加用户控件，可以参考：
http://www.cnblogs.com/insus/articles/2023678.html
http://www.cnblogs.com/insus/articles/1632915.html
http://www.cnblogs.com/insus/articles/2037385.html
