如何能将我們建好的使用者控件，通過代碼動态地加載到頁面中去呢 我最近就遇到了一個這樣的問題，在網上搜尋了幾個方法以後，自己做了實驗，實驗的結果還算是滿意，特意将代碼儲存下來，以免以後會用到。
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="jxytest.aspx.cs" Inherits="D8Miracle_Web_jxytest" %>
<%@ Register Src="../UserContrl/D8Top.ascx" TagName="D8Top" TagPrefix="uc1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>無标題頁</title>
<link href="../CSS/cssx.css" target="_blank" rel="external nofollow" mce_href="CSS/cssx.css" target="_blank" rel="external nofollow" rel="stylesheet" type="text/css" />
<link href="../css/style.css" target="_blank" rel="external nofollow" mce_href="css/style.css" target="_blank" rel="external nofollow" rel="stylesheet" type="text/css" />
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:PlaceHolder id="PlaceHolder1" runat="server"></asp:PlaceHolder>
<asp:Button id="Button1" runat="server" Text="加載使用者控件" OnClick="Button1_Click"></asp:Button>
</div>
</form>
</body>
</html>
cs代碼如下
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class D8Miracle_Web_jxytest : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
if (ViewState["adduc"] == null)
{
adduc();
}
}
}
public void adduc()
{
UserContrl_D8Top uc = (UserContrl_D8Top)Page.LoadControl("../UserContrl/D8Top.ascx");
uc.ID = "uc";
this.PlaceHolder1.Controls.Clear();
this.PlaceHolder1.Controls.Add(uc);
}
public void Button1_Click(object sender, System.EventArgs e)
{
if (ViewState["adduc"] == null)
{
adduc();
ViewState["adduc"] = 1;
}
}
}
![ASP.NET大型績效考核評估系統源碼[圖]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)