Asp.net Validators not working with Client side javascript

Question

0.00/5 (No votes)

See more:

Hey friends,

I have two Asp.net validators on my textboxes.
The TxtPassword has 2 validators:

1.Asp.Net RequiredField Validator.
2.Password length implemented by me with JavaScript.

both are bound to button.

My problem is that...

Whenever i enter the password greater than 20 characters..everything works fine.
But when i leave the TxtPassword empty,the Client side script is bypassed.Sure this is correct.But my Required field validator doesnt work and control flows to server side.and i redirect to other page.

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

<%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="asp" %>

<!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>Migration Issue Tracker</title>
    <script type="text/javascript">
    //<![CDATA[
    function checkforlength() {
        var element = document.getElementById("TxtPassword").value;
        if (element.length > 20) {
            alert("password exceeded the range");
            return false;
        }
        else {return true;}
        }
//
</script>

</head>
<body>
    <form id="form1" runat="server">
    <asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
    </asp:ToolkitScriptManager>
    
        <asp:Panel ID="LoginPanel" runat="server" Width="500px" Height="650px" 
        BorderColor="#00CC66" BorderStyle="Inset" BackColor="ActiveCaption"
        style="position: relative; top: 5px; left: 1065px">
        <asp:Label ID="Label1" runat="server" Text="User Name" 
            style="z-index: 1; left: 58px; top: 170px; position: absolute" 
            Font-Size="X-Large" Font-Bold="True"></asp:Label>
        <asp:Label ID="Label2" runat="server" Text="Password" 
            style="z-index: 1; left: 60px; top: 221px; position: absolute" 
            Font-Size="X-Large" Font-Bold="True"></asp:Label>
        <asp:TextBox ID="TxtUserName" runat="server"   ValidationGroup="ValGroup1"        
            
            style="position: absolute; z-index: 1; left: 193px; top: 171px; height: 21px; width: 197px;" 
            TabIndex="1" EnableViewState="False" CausesValidation="True" 
           ></asp:TextBox>
        
        <asp:Label ID="Label6" runat="server" Text="*" Font-Bold="True" 
            Font-Size="Medium" ForeColor="#CC3300" 
            style="z-index: 1; left: 49px; top: 166px; position: absolute"></asp:Label>
        <asp:Label ID="Label7" runat="server" Text="*" ForeColor="#CC3300" 
            style="z-index: 1; left: 51px; top: 219px; position: absolute"></asp:Label>
        <asp:RequiredFieldValidator ID="RequiredFieldValidatorUserName" runat="server" 
            ErrorMessage="The fields marked with asterisk(*) are mandatory" ControlToValidate="TxtUserName" 
            style="z-index: 1; left: 136px; top: 131px; position: absolute" 
            ValidationGroup="ValGroup1"></asp:RequiredFieldValidator>
            
        <asp:Button ID="Button1"
            runat="server" Text="Log In" 
            style="z-index: 2; left: 194px; top: 290px; position: absolute" OnClientClick="return checkforlength();"
            onclick="Button1_Click" ValidationGroup="ValGroup1" 
            CausesValidation="True" />
        <asp:HyperLink ID="HyperLink2" runat="server"  
            style="z-index: 1; left: 194px; top: 383px; position: absolute" 
            TabIndex="4" Font-Names="Arial" Font-Size="Large" 
            NavigateUrl="~/ForgotPwd.aspx">Forgot Password?</asp:HyperLink>
            
        <asp:HyperLink ID="HyperLink1" runat="server" Font-Bold="True" 
            Font-Names="Arial" Font-Size="Large" Font-Underline="True" 
            style="z-index: 1; left: 295px; top: 52px; position: absolute" 
            NavigateUrl="~/CreateYourAccount.aspx">Create your Account</asp:HyperLink>
        
        
        <asp:TextBox ID="TxtPassword" runat="server" ValidationGroup="ValGroup1"
            
            style="z-index: 1; left: 192px; top: 223px; position: absolute; height: 21px; width: 195px;" 
            TabIndex="2" EnableViewState="False" TextMode="Password"
            ToolTip="This Field is case sensitive." CausesValidation="True"></asp:TextBox>
        <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" 
          ErrorMessage="The fields marked with asterisk(*) are mandatory" 
            ControlToValidate="TxtPassword" ValidationGroup="ValGroup1" 
            style="z-index: 1; left: 136px; top: 131px; position: absolute"></asp:RequiredFieldValidator>
            

        
        
      
</body>
</html>

Posted 3-Feb-13 20:16pm

Member 9581909

Add a Solution

2 solutions

Solution 1

use regular expression intead of javascript,

Posted 3-Feb-13 20:41pm

ddarshan

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Irbaz Haider Hashmi · Accepted Answer · 2013-02-03T21:23:00

Add another validator to the text box

XML

<asp:CustomValidator runat="server"
        ID="CustomValidator"
        ControlToValidate="TxtPassword"
        ClientValidationFunction="checkforlength"
        ValidateEmptyText="true"
        Text="Error!">
    </asp:CustomValidator>

Also update your javascript function

C#

function checkforlength(sender, args) {
    if (args.Value.length > 20) {
        alert("password exceeded the range");
        return false;
    }
    else {return true;}
    }