Limit to number of client-side validators on one aspx page?

Limit to number of client-side validators on one aspx page? - c#

I've got 5 required field validators on an aspx page.
With all validators active, none of the code behind any of the command buttons on the page will fire.
However, with ANY four out of five validators active, buttons all function ok.
Is there a limit to the amount of validators that can be used on a single page? Is there any other reason that this could be happening?
Help appreciated, thanks..
Daf.
Markup looks like this..
> <%# Page Title="" Language="C#" MasterPageFile="~/MasterPages/Admin.Master" AutoEventWireup="true" CodeBehind="RegisterUser.aspx.cs" Inherits="LectureQuestions.Interface.Admin.RegisterUser" %>
<asp:Content ID="Content1" ContentPlaceHolderID="PageTitle" runat="server">Register New User
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="TitleTxt" runat="server">Register New User
</asp:Content>
<asp:Content ID="Content3" ContentPlaceHolderID="MainContent" runat="server">
<table ID="tblInputField" runat="server" width="100%" cellspacing="15">
<tr>
<td width="10%"></td>
<td width="20%">First Name</td>
<td width="60%">
<asp:TextBox ID="txtFirstName" runat="server" Width="98%"></asp:TextBox>
</td>
<td width="10%">
<asp:RequiredFieldValidator ID="txtFirstNameRequired" runat="server"
ControlToValidate="txtFirstName" ErrorMessage="*" ForeColor="Red"></asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td width="10%"></td>
<td width="20%">Last Name</td>
<td width="60%">
<asp:TextBox ID="txtLastName" runat="server" Width="98%"></asp:TextBox>
</td>
<td width="10%">
<asp:RequiredFieldValidator ID="txtLastNameRequired" runat="server"
ControlToValidate="txtLastName" ErrorMessage="*" ForeColor="Red"></asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td width="10%"></td>
<td width="20%">E-mail</td>
<td width="60%">
<asp:TextBox ID="txtEmail" runat="server" Width="98%"></asp:TextBox>
</td>
<td width="10%">
<asp:RequiredFieldValidator ID="txtEmailRequired" runat="server"
ControlToValidate="txtEmail" ErrorMessage="*" ForeColor="Red"></asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td width="10%"></td>
<td width="20%">Phone</td>
<td width="60%">
<asp:TextBox ID="txtPhone" runat="server" Width="98%"></asp:TextBox>
</td>
<td width="10%">
<asp:RequiredFieldValidator ID="txtPhoneRequired" runat="server"
ControlToValidate="txtPhone" ErrorMessage="*" ForeColor="Red"></asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td width="10%"></td>
<td width="20%">Password</td>
<td width="60%">
<asp:TextBox ID="txtPassword" runat="server" Width="98%"></asp:TextBox>
</td>
<td width="10%">
<asp:RequiredFieldValidator ID="txtPasswordRequired" runat="server"
ControlToValidate="txtPassword" ErrorMessage="*" ForeColor="Red"></asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td width="10%"></td>
<td width="20%">User Type</td>
<td width="60%">
<asp:DropDownList ID="txtUserType" runat="server" Width="99.5%">
<asp:ListItem>-- Please Select --</asp:ListItem>
<asp:ListItem>Student</asp:ListItem>
<asp:ListItem>Lecturer</asp:ListItem>
<asp:ListItem>Admin</asp:ListItem>
</asp:DropDownList>
</td>
<td width="10%">
<asp:Label id="txtUserTypeValidation" runat="server" ForeColor="Red"></asp:Label>
</td>
</tr>
<tr>
<td width="10%"></td>
<td width="20%">Course</td>
<td width="60%">
<asp:DropDownList ID="txtCourse" runat="server" Width="99.5%">
</asp:DropDownList>
</td>
<td width="10%"></td>
</tr>
</table>
<table ID="tblAllValidationMsg" runat="server" width="100%" cellspacing="5">
<tr>
<td width="10%"></td>
<td width="80%" align="center">
<asp:Label id="allValidationMsg" runat="server" height="22px" ForeColor="Red"></asp:Label>
</td>
<td width="10%"></td>
</tr>
</table>
<table ID="tblCommandButtons" runat="server" width="100%" cellspacing="10">
<tr>
<td width="25%"></td>
<td width="25%" align="right">
<asp:Button class="navbutton" ID="btnRegister" runat="server"
Text="Register User" OnClick="btnRegister_Click" />
</td>
<td width="25%" align="left">
<asp:Button class="navbutton" ID="btnCancel" runat="server"
Text="Cancel" onclick="btnCancel_Click" />
</td>
<td width="25x%"></td>
</tr>
</table>
</asp:Content>

Answer:
No there is no limit to validations on the page.
Misc:
Pranay has provided the fix in his answer.

In the end, I placed a second regular expression validator on one of the fields for testing.
When I removed this validator, problem ceased. Don't know how or why; any advice on this welcome..

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by default password textbox will not retail value on postback.so you need following ways to preserve value based on this link
protected void Page_Load(object sender, EventArgs e)
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Layout:
<table>
<tr>
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&nbsp
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<tr> <td colspan="2"> </td></tr>
<tr>
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<asp:Repeater ID="Repeater1" runat="server" ItemType="SiteStiri.Models.Comments" SelectMethod="GetComments">
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<td>&nbsp
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</tr>
<tr>
<td>
<asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClick="btnSubmit_Click" />
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<td>&nbsp
</td>
</tr>
</table>
</td>
</tr>
</table>

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DEMO: http://jsfiddle.net/WzLc3/3/
ALSO:
If you cannot use Jquery for your application, you can do this purely through asp.net but lightly more complicated by using the calander contorl.
here is a great tutorial for beginners to walk you through the steps,
http://www.dotnetfunda.com/articles/article746-how-to-create-a-date-picker-in-aspnet.aspx

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ValidationGroup="a" />
</td>
now I am fed up as when I run my application and click the ImageButton it doesn't respond to the validation at all and redirects to the next page. Can anyone say why is it so? this is the first time wherein the validators are not working.
this is source code:-
<td align="left"><table width="480" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="178" align="right" class="simple_text">User Name : </td>
<td width="302" align="left">
<asp:TextBox ID="txt_username" runat="server"
CssClass="text_box_username" Width="180px" AutoPostBack="True"
ontextchanged="txt_username_TextChanged" ValidationGroup="a"
CausesValidation="True"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"
ControlToValidate="txt_username" ErrorMessage="RequiredFieldValidator"
ValidationGroup="a">**</asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td align="right" class="simple_text"> </td>
<td align="left"> </td>
</tr>
<tr>
<td align="right" class="simple_text">Password : </td>
<td align="left">
<asp:TextBox ID="txt_password" runat="server" CssClass="text_box_password"
TextMode="Password" Width="180px" ValidationGroup="a"
CausesValidation="True"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server"
ControlToValidate="txt_password" ErrorMessage="RequiredFieldValidator"
ValidationGroup="a">**</asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td align="right" class="simple_text"> </td>
<td align="left"> </td>
</tr>
<tr>
<td align="right" class="simple_text"> </td>
<td align="left">
<asp:ImageButton ID="ImageButton1" runat="server" CausesValidation="true"
ImageUrl="~/images/signin_button.gif" onclick="ImageButton1_Click"
ValidationGroup="a" />
</td>
</tr>
</table></td>
</tr>
<tr>
<td align="left"> </td>
</tr>
<tr>

hi just paste this code will work surely for you
<%# Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<td align="left"><table width="480" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="178" align="right" class="simple_text">User Name : </td>
<td width="302" align="left">
<asp:TextBox ID="txt_username" runat="server"
Width="180px" AutoPostBack="True"
ValidationGroup="a"
CausesValidation="True" ontextchanged="txt_username_TextChanged"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"
ControlToValidate="txt_username" ErrorMessage="RequiredFieldValidator"
ValidationGroup="a">**</asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td align="right" class="simple_text"> </td>
<td align="left"> </td>
</tr>
<tr>
<td align="right" class="simple_text">Password : </td>
<td align="left">
<asp:TextBox ID="txt_password" runat="server"
TextMode="Password" Width="180px" ValidationGroup="a"
CausesValidation="True"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server"
ControlToValidate="txt_password" ErrorMessage="RequiredFieldValidator"
ValidationGroup="a">**</asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td align="right" class="simple_text"> </td>
<td align="left"> </td>
</tr>
<tr>
<td align="right" class="simple_text"> </td>
<td align="left">
<asp:ImageButton ID="ImageButton1" runat="server" CausesValidation="true"
ImageUrl="~/images/signin_button.gif" onclick="ImageButton1_Click"
ValidationGroup="a" />
</td>
</tr>
</table></td>
</tr>
<tr>
<td align="left"> </td>
</tr>
<tr>
</div>
</form>
</body>
</html>

Hope you provided the validationGroup property properly.
Specifying Validation Groups

How about this:
<asp:ImageButton runat="server" CausesValidation="true" ImageUrl="..." />
CausesValidation="true" might force the validation to run.

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