新建一个空网站；加入一个Default页；
添加一个web用户控件；
解决方案结构如下；
用户控件页面添加一个Label；
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="WebUserControl.ascx.cs" Inherits="WebUserControl" %><asp:Label ID="Label1" runat="server" Height="30px" Width="200px"></asp:Label>
WebUserControl.ascx.cs加入2个方法；
using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;public partial class WebUserControl : System.Web.UI.UserControl{protected void Page_Load(object sender, EventArgs e){}public void MyAdd(int a, int b){Label1.Text = "和:" + Convert.ToString(a + b);}public void MySub(int a, int b){Label1.Text = "差:" + Convert.ToString(a - b);}}
Default页面加入用户控件，
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %><%@ Register Src="WebUserControl.ascx" TagName="WebUserControl" TagPrefix="uc1" %><!DOCTYPE html><html xmlns="/1999/xhtml"><head runat="server"><meta http-equiv="Content-Type" content="text/html; charset=utf-8"/><title></title></head><body><form id="form1" runat="server"><div><asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>+<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox><asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="相加" /><br /><asp:TextBox ID="TextBox3" runat="server"></asp:TextBox> -<asp:TextBox ID="TextBox4"runat="server"></asp:TextBox><asp:Button ID="Button2" runat="server" Text="相减" OnClick="Button2_Click" /><br /><uc1:WebUserControl id="WebUserControl1" runat="server"></uc1:WebUserControl></div></form></body></html>
Default页面cs文件调用用户控件方法；
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 void Page_Load(object sender, EventArgs e){}protected void Button1_Click(object sender, EventArgs e){WebUserControl1.MyAdd(Convert.ToInt16(TextBox1.Text), Convert.ToInt16(TextBox2.Text));}protected void Button2_Click(object sender, EventArgs e){WebUserControl1.MySub(Convert.ToInt16(TextBox3.Text), Convert.ToInt16(TextBox4.Text));}}
执行情况如下；
下面来进一步；
在用户控件增加三个方法，分别获取随机数、获取1-100之间随机数、获取GUID；结果都放到Label1；
public void MyRand(){Random rd = new Random();int i = rd.Next();Label1.Text = i.ToString();}public void MyRand100(){Random rd = new Random();int i = rd.Next()%100+1;Label1.Text = i.ToString();}public void MyGuid(){Label1.Text=Guid.NewGuid().ToString();}
Default.aspx加入三个按钮；
<asp:Button ID="Button3" runat="server" Text="获取随机数" OnClick="Button3_Click" /><asp:Button ID="Button4" runat="server" Text="获取1-100之间随机数" OnClick="Button4_Click" /><asp:Button ID="Button5" runat="server" Text="获取GUID" OnClick="Button5_Click" />
Default.aspx.cs调用用户控件方法；
protected void Button3_Click(object sender, EventArgs e){WebUserControl1.MyRand();}protected void Button4_Click(object sender, EventArgs e){WebUserControl1.MyRand100();}protected void Button5_Click(object sender, EventArgs e){WebUserControl1.MyGuid();}
运行情况如下；
