I have a .net 2.0 form that disables the submit button after clicked. THis works just fine:
btnSubmit.Attributes.Add("
However, I have validation controls being used also. If the page is not valid, the button is still disbaled. How do I keep the button enabled if the page is not valid? I have tried the following:
If Page.IsValid Then
'//processing here
Else
btnSubmit.Text = "Continue Mortgage Application"
btnSubmit.Enabled = True
End If
which does not seem to be working
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Jayrod,
This is a classic problem in .NET. Fortunately, there is a very easy solution. The .NET validators render JavaScript to the page that you can use to see if the page is valid before you disable your button. So instead of directly disabling your button onclick, have it fire a JavaScript function that looks like this:
function disableButton(e){
// Do nothing if client validation is not active
if (typeof(Page_Validators) == "undefined") return;
if (typeof(Page_ClientValidat
if (Page_ClientValidate() == false) {
return false;
}else{
//check client-side IsValid variable set by Page_ClientValidate
if(Page_IsValid){
//Do you button disabling here
e.disabled = true;
e.value = 'Please wait...';
}
}
}
}
For a longer discussion on this approach and some more examples, check out these resources:
http://www.codeproject.com
http://msdn.microsoft.com/
Hope that helps.
Thanks~
Todd
Hi Todd!
thanks so much! That works great! However, the validation seems to be firing twice now? I have tried putting the JS code above in the HEAD and the BODY and it still seems to fire twice, showing the popup validation alert twice. Is there any explanationn for this - hopefully it will be an easy fix :) Thanks again so much!
Well...technically it will fire twice now. Once when you call the validation routine (Page_ClientValidate()) and once when the "normal" page life cycle calls the validation routine.
The reason we call the Page_ClientValidate is to ensure that the Page_IsValid property is properly updated with the current valid state of the page. I think your options are to either move away from using alerts to display validation warnings (using page labels instead) or to try to "disable" the normal Page_ClientValidate call.
If you want to go the route of disabling the normal Page_ClientValidate call, you may be able to "unwire" the function after you call it in your button click so that when it's called by the validators it does nothing. For example:
function disableButton(e){
// Do nothing if client validation is not active
if (typeof(Page_Validators) == "undefined") return;
if (typeof(Page_ClientValidat
if (Page_ClientValidate() == false) {
//Set the Page_ClientValidate function to a "dummy" function so it doesn't fire again
Page_ClientValidate = function(){return false;};
return false;
}else{
//check client-side IsValid variable set by Page_ClientValidate
if(Page_IsValid){
//Do you button disabling here
e.disabled = true;
e.value = 'Please wait...';
}
}
}
}
Give that a try or check out the links I supplied for some additional ideas.
Thanks~
Todd
Business Accounts
Answer for Membership
by: stanscott2Posted on 2007-03-04 at 08:44:07ID: 18650376
There is no enabled property, only disabled. You need to use this:
btnSubmit.disabled = False;