Cancel Submit ASP.NET

[Guest]

How do I cancel submit process if certain fields are not filled in my
ASP.NET form? I need to know how to do it using the Click sub for the
submit button (in the .vb file) and not using javascript, if possible.

 

[=?ISO-8859-1?Q?G=F6ran_Andersson?=]

How do I cancel submit process if certain fields are not filled in my
ASP.NET form? I need to know how to do it using the Click sub for the
submit button (in the .vb file) and not using javascript, if possible.

When the server event of the button is running, the request has already
reached the server, so it's way too late to stop it.

 

[Mark Rae]

How do I cancel submit process if certain fields are not filled in my
ASP.NET form? I need to know how to do it using the Click sub for the
submit button (in the .vb file) and not using javascript, if possible.

I don't believe it's possible to do this without JavaScript...

 

[Thomas Hansen]

How do I cancel submit process if certain fields are not filled in my
ASP.NET form? I need to know how to do it using the Click sub for the
submit button (in the .vb file) and not using javascript, if possible.

Normally you'd use a RequiredFieldValidator, but since you explicitly
say that you've reached SERVER code you must use your own logic...
What about:
if( InputFieldsValid() )
{
/*...do something...*/
}

??

..t