用户控件事件使用delegate
1.在我们写一个用户控件时需要考虑到重用得问题,如果控件中包含按钮事件,
我们不可能将点击事件写到控件里,而是我们想吧事件处理得过程写在
调用控件的页面中,这是该怎么处理呢?
我的做法时使用delegate来实现这个功能!
具体做法如下:
下面是控件的html部分
控件的cs部分
我们调用这个控件的页面写法如下:
我们不可能将点击事件写到控件里,而是我们想吧事件处理得过程写在
调用控件的页面中,这是该怎么处理呢?
我的做法时使用delegate来实现这个功能!
具体做法如下:
下面是控件的html部分
1
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="ctlForm.ascx.cs" Inherits="ctlForm" %>
2
<table>
3 <tr>
4 <td style="width: 100px">
5 name</td>
6 <td style="width: 100px">
7 <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox></td>
8 </tr>
9 <tr>
10 <td style="width: 100px">
11 sex</td>
12 <td style="width: 100px">
13 <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox></td>
14 </tr>
15 <tr>
16 <td style="width: 100px">
17 </td>
18 <td style="width: 100px">
19 <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="测试" /></td>
20 </tr>
21</table>
22
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="ctlForm.ascx.cs" Inherits="ctlForm" %>
2
<table>3
<tr>4
<td style="width: 100px">5
name</td>6
<td style="width: 100px">7
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox></td>8
</tr>9
<tr>10
<td style="width: 100px">11
sex</td>12
<td style="width: 100px">13
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox></td>14
</tr>15
<tr>16
<td style="width: 100px">17
</td>18
<td style="width: 100px">19
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="测试" /></td>20
</tr>21
</table>22
控件的cs部分
1using System;
2using System.Data;
3using System.Configuration;
4using System.Collections;
5using System.Web;
6using System.Web.Security;
7using System.Web.UI;
8using System.Web.UI.WebControls;
9using System.Web.UI.WebControls.WebParts;
10using System.Web.UI.HtmlControls;
11
12public partial class ctlForm : System.Web.UI.UserControl
13{
14
protected void Page_Load(object sender, EventArgs e)
15
{
16
17
}
18
19 public delegate void ClickHander();
20
21 public ClickHander MyClickHandler = null;
22
23 public void Button1_Click(object sender, EventArgs e)
24 {
25 if (MyClickHandler != null)
26 {
27 MyClickHandler();
28 }
29 }
30
}
31
using System;2
using System.Data;3
using System.Configuration;4
using System.Collections;5
using System.Web;6
using System.Web.Security;7
using System.Web.UI;8
using System.Web.UI.WebControls;9
using System.Web.UI.WebControls.WebParts;10
using System.Web.UI.HtmlControls;11
12
public partial class ctlForm : System.Web.UI.UserControl13
{14
protected void Page_Load(object sender, EventArgs e)15
{
16
17
}18
19
public delegate void ClickHander();20
21
public ClickHander MyClickHandler = null;22
23
public void Button1_Click(object sender, EventArgs e)24
{25
if (MyClickHandler != null)26
{27
MyClickHandler();28
}29
}30
}31
我们调用这个控件的页面写法如下:
1<%@ Page Language="C#" AutoEventWireup="true" CodeFile="testForm.aspx.cs" Inherits="testForm" %>
2
3<%@ Register Src="ctlForm.ascx" TagName="ctlForm" TagPrefix="uc1" %>
4
5<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
6
7<html xmlns="http://www.w3.org/1999/xhtml" >
8<head runat="server">
9 <title>无标题页</title>
10</head>
11<body>
12 <form id="form1" runat="server">
13 <div>
14 <uc1:ctlForm ID="CtlForm1" runat="server" />
15
16 </div>
17 </form>
18</body>
19</html>
20
调用控件的cs代码如下<%@ Page Language="C#" AutoEventWireup="true" CodeFile="testForm.aspx.cs" Inherits="testForm" %>2
3
<%@ Register Src="ctlForm.ascx" TagName="ctlForm" TagPrefix="uc1" %>4
5
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">6
7
<html xmlns="http://www.w3.org/1999/xhtml" >8
<head runat="server">9
<title>无标题页</title>10
</head>11
<body>12
<form id="form1" runat="server">13
<div>14
<uc1:ctlForm ID="CtlForm1" runat="server" />15
16
</div>17
</form>18
</body>19
</html>20
1using System;
2using System.Data;
3using System.Configuration;
4using System.Collections;
5using System.Web;
6using System.Web.Security;
7using System.Web.UI;
8using System.Web.UI.WebControls;
9using System.Web.UI.WebControls.WebParts;
10using System.Web.UI.HtmlControls;
11
12public partial class testForm : System.Web.UI.Page
13{
14 protected void Page_Load(object sender, EventArgs e)
15 {
16 CtlForm1.MyClickHandler = new ctlForm.ClickHander(this.Test);
17 }
18
19 public void Test()
20 {
21 Response.Write("ok");
22 }
23
24
25}
using System;2
using System.Data;3
using System.Configuration;4
using System.Collections;5
using System.Web;6
using System.Web.Security;7
using System.Web.UI;8
using System.Web.UI.WebControls;9
using System.Web.UI.WebControls.WebParts;10
using System.Web.UI.HtmlControls;11
12
public partial class testForm : System.Web.UI.Page13
{14
protected void Page_Load(object sender, EventArgs e)15
{16
CtlForm1.MyClickHandler = new ctlForm.ClickHander(this.Test);17
}18
19
public void Test()20
{21
Response.Write("ok");22
}23
24
25
}
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