• Asp.Net中Ajax实现登陆判断


    Default.aspx:
    
    <head runat="server">
        <title>无标题页</title>
        <script type="text/javascript">
        var xmlhttp;
        function Login()
        {
        var userName=document.getElementById("TextBox1").value;
        var userPwd=document.getElementById("TextBox2").value;
        xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
        xmlhttp.open("GET","Login.aspx?UserName="+userName+"&UserPwd="+userPwd,true);
        xmlhttp.onreadystatechange=stateChange;
        xmlhttp.send(null);
        return false;
        }
        
        function stateChange()
        {
            if(xmlhttp.readystate==4&&xmlhttp.status==200)
            {
                document.getElementById("Label1").innerHTML=xmlhttp.responseText;
            }
        }
        </script>
        
    </head>
    <body>
        <form id="form1" runat="server">
        <div>
            <asp:TextBox ID="TextBox1" runat="server" Width="100px"></asp:TextBox><br />
            <asp:TextBox ID="TextBox2" runat="server" Width="100px"></asp:TextBox>
            <br />
            <asp:Button ID="Button1" runat="server" Text="登陆" />
            <asp:Label ID="Label1" runat="server"></asp:Label></div>
        </form>
    </body>

        protected void Page_Load(object sender, EventArgs e)
        {
            this.Button1.Attributes.Add("OnClick","return Login()");
        }
    
    Login.aspx:
    
        protected void Page_Load(object sender, EventArgs e)
        {
            if (Request.QueryString["UserName"] != null && Request.QueryString["UserName"].Length != 0 && Request.QueryString["UserPwd"] != null && Request.QueryString["UserPwd"].Length != 0)
            {
                if (Request.QueryString["UserName"] == "wu1987116" && Request.QueryString["UserPwd"] == "wu1987116")
                {
                    Response.Write("登陆成功!");
                }
                else
                {
                    Response.Write("用户名或密码错误!");
                }
            }
        }
    

      

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  • 原文地址:https://www.cnblogs.com/yuhuameng/p/5207683.html
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