ASP:RequiredFieldValidator doing postback

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Hi,

I have a Required Field validator for a Text box.

<asp:TextBox runat="server" ID="txtUserName" TabIndex="1" />

<asp:RequiredFieldValidator ID="reqUserName" runat="server" ControlToValidate="txtUserName" ErrorMessage="The user name field is required." ValidationGroup="validateSave"/>

<asp:Button ID="btnLogin" runat="server" Text="Login" OnClick="btnLogin_Click" ValidationGroup="validateSave"/>

This code works fine in my local machine and in the development server which is running in Windows 7 OS.

But in the testing server which has Windows 2008, error message is displayed when the textbox is empty and at the same time post back happens.

I tried to give EnableClientScript = true and CausesValidation=true. But nothing works out.

Any quick help is much appreciated.

Thanks,
Nithiya

Posted 6-Feb-15 0:55am

Nithiya kiruthiga

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/\jmot · Answer 1 · 2015-02-06T01:55:00

Solution 1

Can't think about that, why postBack Occure.

but my suggesion is..try<br />
Use a Validation Group and check this group on server side like that..

C#

protected void btnLogin_Click(object sender, EventArgs e)
{
Page.Validate("VGroup");//VGroup is the Validation group
if (!Page.IsValid)
 {
   return;
 }
else
{
//do your Work...

}
}

ref.
https://msdn.microsoft.com/en-us/library/ms227424(v=vs.140).aspx[^]

Posted 6-Feb-15 1:55am

/\jmot

Updated 6-Feb-15 2:05am

v2

Comments

Nithiya kiruthiga 6-Feb-15 8:49am

But it is working in a server without this code. Why is it different in another server? Any idea?

/\jmot 6-Feb-15 15:48pm

i don't know, sometime it happens,can't understand. and i didn't find any solution and i just used above code for the solution.