不用AJAX实现前台JS调用后台C#方法(小技巧) 【改自Web.网际浪人.Blog】 _c# html 不使用asp点击按钮后台执行函数-优快云博客

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这个例子在iframe嵌套中很实用，因为要涉及到在新窗口中打开网页

前台页面

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="testLogin.aspx.cs" Inherits="testLogin" %>

<!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>Untitled Page</title>
    <script language="javascript" type="text/javascript">
    function go()
    {
        document.getElementById("Button2").click();
    }
    </script>

</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
        <a href="index.aspx" target="_blank"  onclick="go()">登  录</a>
    <asp:Button ID="Button2" runat="server" Text="Button" OnClick="Button2_Click" Style="display: none;" />
    </div>
    </form>
</body>
</html>

后台页面

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;

public partial class testLogin : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

    }

    protected void Button2_Click(object sender, EventArgs e)
    {
        if (TextBox1.Text == "1")
        {
            Session["admin"] = "admin";
        }
    }

}