ASP.NET validation

[Kevin]

Hi all

Can anyone please tell me how to perform validation an a control based on a value in another control. i.e. If control A == "Hello" then perform validation on control B, otherwise don't perform the validation on control
any ideas

Thanks eveeryon

Kevin

[Ignacio Machin \( .NET/ C# MVP \)]

Re: ASP.NET validation

Hi Kevin,

This depend of your page logic, what I do in a case like this is have a
method in the code behind page which I call before the action I will
perform, in the method I do all the checking I need if it's failed I make
visible a label in the page with the error description, you could even put
the focus in the failing control if you want using Javascript.

then in the handler the first thing I do is check if the validation passed,
if not just return or do what you need.

void ProcessClick(.. . )
{
if ( !CheckControls( ) )
return;


Cheers,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation

"Kevin" <anonymous@disc ussions.microso ft.com> wrote in message
news:108C67E3-B7D3-4E14-B287-9CC24DF9240F@mi crosoft.com...[color=blue]
> Hi all,
>
> Can anyone please tell me how to perform validation an a control based on[/color]
a value in another control. i.e. If control A == "Hello" then perform
validation on control B, otherwise don't perform the validation on control B[color=blue]
> any ideas?
>
> Thanks eveeryone
>
> Kevin[/color]

[Martin Marinov]

Re: ASP.NET validation

On of the solution to do this is to use CustomValidator control

private void controlA_Server Validate(object source,
System.Web.UI.W ebControls.Serv erValidateEvent Args args)
{
if ( control A == "Hello" )
{
if (perform validation on the second control is true)
{
args.IsValid = true;
}
else
{
args.IsValid = false;
}
}
}

"Kevin" <anonymous@disc ussions.microso ft.com> wrote in message
news:108C67E3-B7D3-4E14-B287-9CC24DF9240F@mi crosoft.com...[color=blue]
> Hi all,
>
> Can anyone please tell me how to perform validation an a control based on[/color]
a value in another control. i.e. If control A == "Hello" then perform
validation on control B, otherwise don't perform the validation on control B[color=blue]
> any ideas?
>
> Thanks eveeryone
>
> Kevin[/color]