asp.net Ctrl+回车提交

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

<!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>asp.net Ctrl+回车提交</title>
    <script type="text/javascript">
        //这种提交在asp.net下不会执行后台代码
        function submitForm(formName) {
            if(window.event.ctrlKey&&window.event.keyCode==13) {
                document.getElementById(formName).submit();
            }
        }
        //相当于按了一下提交按钮,所以此法在asp.net可行
        function clickButton() {
            if(window.event.ctrlKey&&window.event.keyCode==13) {
                document.getElementById("btnOk").click();
            }
        }
    </script>
</head>
<body>
    <form id="form1" runat="server" name="form1">
    <div>
        <asp:TextBox ID="txtContent" runat="server" TextMode="MultiLine" onkeydown="submitForm(this.form.name);"></asp:TextBox>
        <br />
        <asp:TextBox ID="txtBody" runat="server" TextMode="MultiLine" onkeydown="clickButton();"></asp:TextBox>
        <br />
        <asp:Button ID="btnOk" runat="server" Text="提交" onclick="btnOk_Click" />
    </div>
    </form>
</body>
</html>

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
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;
using System.Xml.Linq;

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

    }
    protected void btnOk_Click(object sender, EventArgs e)
    {
        Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "alert", "<script>alert('提交成功!')</script>", false);
    }
}