AJAX, Intercept Submit before it happens

  • Thread starter Thread starter Lit
  • Start date Start date
L

Lit

Hi,

I have an update panel with a Submit Button. ( AJAXified )

Is there a way, good way, of Intercepting a submit before it happens?

I would like to do something in JavaScript before proceeding with the submit
process.

How to Inject such JavaScript from Code Behind?

Thank You,

Lit
 
Hi,

I have an update panel with a Submit Button. ( AJAXified )

Is there a way, good way, of Intercepting a submit before it happens?

I would like to do something in JavaScript before proceeding with the submit
process.

How to Inject such JavaScript from Code Behind?

Thank You,

Lit
Click to expand...

OnClientClick for the button. If you return TRUE, the action will
occur.
 
Larry,

Excellent ( For the Submit Button ), What about something like a ListBox
Control that does not have OnClientClick that I can see.

Thanks for your quick reply.

Lit.
 
Excellent ( For the Submit Button ), What about something like a ListBox
Control that does not have OnClientClick that I can see.
Click to expand...

MyListBox.Attributes.Add("onclick", "alert('Clicked');");
 
Mark,

If I already have an onclick - server event, how do I Intercept before I
post back?

or how do I intercept the OnSelectedIndexChanged event in JavaScript. Is it
called something else for the ListBox on the client side?

Does the Client script event handler get executed then the server event
handler after the post?

Thank much for your time

Lit
 
If I already have an onclick - server event, how do I Intercept before I
post back?
Click to expand...

Larry's already answered that... You add a client-side onclick event and
capture the return value - if it's false, the postback won't happen...
or how do I intercept the OnSelectedIndexChanged event in JavaScript. Is
it called something else for the ListBox on the client side?

Does the Client script event handler get executed then the server event
handler after the post?
Click to expand...

Yes, unless the client-side event returns false...
 
Back
Top