ASP.NET动态添加用户控件

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  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.
    
    View Code
    
    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:
    
    View Code
    
    <%@ 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:
    
    View Code
    
    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 ();
    
    }//http://www.baoluowanxiang.com
    
    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:
    
    View Code
    
    protected void Page_Load(object sender, EventArgs e)
    
    {
    
    IGetUCable uc1 = (IGetUCable)LoadControl("~/Calculator.ascx");
    
    this.form1.Controls.Add(uc1.GetUC());
    
    }
    
    用户控件加载之后运行效果: