ASP.NET动态添加用户控件的方法

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());

}