clientscript.registerstarupscript
程序代码：
<!DOCTYPE html>
<html xmlns="http://www.">
<head><meta http-equiv="Content-Type" content="textml; charset=utf-8" /><title>
</title></head>
<body>
<form method="post" action="./LandingpPage.aspx" id="form1">
<div class="aspNetHidden">
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="3Tw4SA4WZSrTCGdmdo1TDS54/TVWMWh87lnm62gsYRJR3AC5VAQF6+6ZnDnSLYNJXf2XNpQC2RhpYMdSEqv7AxC0vb0JaRM6lA8yr73R77xSQBQF8WVxokUhhf6wYFGO" />
</div>
<div class="aspNetHidden">
<input type="hidden" name="__VIEWSTATEGENERATOR" id="__VIEWSTATEGENERATOR" value="14C49897" />
<input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="U1/47TOl8WrYiuiCe/XXXcK43ukKNw82GRNzlqhyYAC1PAPweSPm4ykjZJlThQhVFapGrDQB4MuzqPlDux+9jzSW58E/KAMt7hL4N1cmuQoFrj7P6J+iWgvQamCmxALdHWC5eNH9FtCw1jeeGrGXLy8hV/qS4pfz3RRv5x9WV2ElcZxzcZqLU56Dkuz4nTl7W3qL6Kk1t4QbgEdZo0urNZt8yaK2kvtocIzkE90qjBRScFk2zMl7S2ExDbHrj9Dg" />
</div>
<div>
</div>
<span id="Land">登陆名:</span>
<input name="PrintUser" type="text" id="PrintUser" />
<p>
<span id="Passwd">密码:</span>
<input name="PrintPasswd" type="password" id="PrintPasswd" />
</p>
<span id="Label1"> </span>
<input type="submit" name="Landing" value="登陆" id="Landing" style="height: 27px" />
<p>
<input type="submit" name="ModifyPwd" value="修改密码" id="ModifyPwd" />
<select name="Identify_LandingPage" id="Identify_LandingPage">
<option selected="selected" value=""></option>
<option value="管理员">管理员</option>
<option value="普通职工">普通职工</option>
<lect>
</p>
<script></script>
</form>
</body>
<ml>程序代码：using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using ModifyPwd;
namespace WebApplication3
{
public partial class WebForm1 : System.Web.UI.Page
{
public string strCnn;
private string id;
private string pwd;
private string identify;
private string id2; // 从数据库读出
private string pwd2;
private string identify2;
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Landing_Click1(object sender, EventArgs e)
{
strCnn = "data source=localhost;initial catalog=学校工资管理系统;user id=sa;" + "pwd=520524";
SqlConnection sqlCnn = new SqlConnection();
sqlCnn.ConnectionString = strCnn;
sqlCnn.Open();
SqlCommand sqlcmd = sqlCnn.CreateCommand();
= "select ID,Pwd,Identify from UserName where" + " ID ='" + id + "' ";
SqlDataReader sqlReader = sqlcmd.ExecuteReader();
if (sqlReader.Read())
{
id2 = (string)sqlReader[0];
pwd2 = (string)sqlReader[1];
identify2 = (string)sqlReader[2];
}
sqlReader.Close();
if (id == null || pwd == null)
ClientScript.RegisterStartupScript(GetType(), "NullUser", "alter('请输入账号密码!')", true);
if (id2 == null || pwd != pwd2)
ClientScript.RegisterStartupScript(GetType(), "WrongUser", "alter('账号或者密码错误!')", true);
else
{
if (identify2 == identify)
Response.Redirect("MainPage.aspx");
else
ClientScript.RegisterStartupScript(GetType(), "None", "alter('你没有这个权限!')", true);
}
}
protected void ModifyPwd_Click(object sender, EventArgs e)
{
Response.Redirect("ModifyPwdPage.aspx");
}
protected void PrintUser_TextChanged(object sender, EventArgs e)
{
id = PrintUser.Text;
}
protected void Identify_LandingPage_SelectedIndexChanged(object sender, EventArgs e)
{
identify = Identify_LandingPage.Text;
}
protected void PrintPasswd_TextChanged1(object sender, EventArgs e)
{
pwd = PrintPasswd.Text;
}
}
}
上面是html代码，下面是asp源码，问题就是为什么clientscript会失效，就是根本不会弹出提示窗口
ps：他有执行clientscript语句，亲手调试过。
