本文实例讲述了ASP.NET动态添加用户控件的方法。分享给大家供大家参考。具体实现方法如下：
为了让用户控件能ASP.NET页面实现动态添加，首先写一个接口IGetUCable,这个接口有一个函数，返回对象类型是UserControl.
using
System;
using
System.Collections.Generic;
using
System.Linq;
using
System.Web;
using
System.Web.UI;
/// <summary>
/// Summary description for IGetUCable
/// </summary>
namespace
Insus.NET
{
public
interface
IGetUCable
{
UserControl GetUC();
}
}
有了接口之后，需要创建用户控件Calculator.ascx:
<%@ Control Language=
"C#"
AutoEventWireup=
"true"
CodeFile=
"Calculator.ascx.cs"
Inherits=
"Calculator"
%>
Number A: <asp:TextBox ID=
"TextBox1"
runat=
"server"
></asp:TextBox> <br />
+ <br />
Number B: <asp:TextBox ID=
"TextBox2"
runat=
"server"
></asp:TextBox><br />
<asp:Button ID=
"ButtonEqual"
runat=
"server"
Text=
"="
OnClick=
"ButtonEqual_Click1"
/>
<br />
Result: <asp:Label ID=
"LabelResult"
runat=
"server"
Text=
""
></asp:Label>
Calculator.ascx.cs,cs实现接口：
using
System;
using
System.Collections.Generic;
using
System.Linq;
using
System.Web;
using
System.Web.UI;
using
System.Web.UI.WebControls;
using
Insus.NET;
public
partial
class
Calculator : System.Web.UI.UserControl,IGetUCable
{
protected
void
Page_Load(
object
sender, EventArgs e)
{
}
protected
void
ButtonEqual_Click1(
object
sender, EventArgs e)
{
decimal
a =
decimal
.Parse(
this
.TextBox1.Text.Trim());
decimal
b =
decimal
.Parse(
this
.TextBox2.Text.Trim());
this
.LabelResult.Text = (a + b)。ToString ();
}
public
UserControl GetUC()
{
return
this
;
}
}
using
System;
using
System.Collections.Generic;
using
System.Linq;
using
System.Web;
using
System.Web.UI;
using
System.Web.UI.WebControls;
using
Insus.NET;
public
partial
class
Calculator : System.Web.UI.UserControl,IGetUCable
{
protected
void
Page_Load(
object
sender, EventArgs e)
{
}
protected
void
ButtonEqual_Click1(
object
sender, EventArgs e)
{
decimal
a =
decimal
.Parse(
this
.TextBox1.Text.Trim());
decimal
b =
decimal
.Parse(
this
.TextBox2.Text.Trim());
this
.LabelResult.Text = (a + b)。ToString ();
}
public
UserControl GetUC()
{
return
this
;
}
}
最后是在需要加载用户控件的aspx的Page_load事件写：
protected
void
Page_Load(
object
sender, EventArgs e)
{
IGetUCable uc1 = (IGetUCable)LoadControl(
"~/Calculator.ascx"
);
this
.form1.Controls.Add(uc1.GetUC());
}