chapter9, 295.

pas · September 29th, 2008, 05:06 AM

Hi there, I'm working on "try it out" page 294 "Using the RequiredFieldValidator". Well I thing to have done everything right but when I try to show the page "Contact us" I receive the following message error:

Server Error in '/Site' Application.
--------------------------------------------------------------------------------

A page can have only one server-side Form tag.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Web.HttpException: A page can have only one server-side Form tag.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Is there anybody that can help me?
Thank you.

planoie · September 29th, 2008, 10:04 AM

It sounds like you created a standard web form, then changed it to use the master page, which is resulting in two instances of a <form runat="server" ...>. Do you have <html> <body> and <form> in your page somewhere? When master pages, you should have that. Only one or more content tags.

-Peter
compiledthoughts.com

pas · September 30th, 2008, 05:21 AM

Peter,
those are the extra codes that have been created when I added the user control "ContactForm.ascx"

<!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 id="Head1" runat="server">

I deleted the code and the "Contact us" page showed up.

Thank you,
Pasquale.

Imar · September 30th, 2008, 06:55 AM

Hi pas,

Are you sure you added a User Control instead of a page? Maybe you added a Web Form and then named it with an .ascx extension?

Normally, when you add a new User Control you shouldn't get the HTML you just posted.

Imar

---------------------------------------
Imar Spaanjaars
http://Imar.Spaanjaars.Com
Everyone is unique, except for me.
Author of Beginning ASP.NET 3.5 : in C# and VB, ASP.NET 2.0 Instant Results and Dreamweaver MX 2004
Want to be my colleague? Then check out this post.

pas · September 30th, 2008, 06:21 PM

Yes Imar, it is exactly what I have done.
I added a Web Form instead than a User Control then I changed aspx to ascx and Page to Control in the source code. Instead in the code behind, I changed System.Web.UI.Page to System.Web.UI.UserControl.
Although, I still couldn't realized that I was using wrong form.
Thanks for your help.
Pasquale.

Imar · October 1st, 2008, 04:55 AM

Hi Pasquale,

You're welcome. Glad it's working now.....

Imar

---------------------------------------
Imar Spaanjaars
http://Imar.Spaanjaars.Com
Everyone is unique, except for me.
Author of Beginning ASP.NET 3.5 : in C# and VB, ASP.NET 2.0 Instant Results and Dreamweaver MX 2004
Want to be my colleague? Then check out this post.