Asp.net codebehind from javascript?

Question

Is it possible to call asp.net codebehind function from javascript in vs2008?
My problem is, I have two codebehind methods, one is for some validation and it will return tru

Answer 1

To call a server side method on a client side event you need to do the following:

1- Create the server side method:

void DoSomething(...) { ... }

2- Implement the System.Web.UI.IPostBackEventHandler.RaisePostBackEvent which take one string argument (You can assign the name to the value of this argument).:

public void RaisePostBackEvent(string eventArgument) 
{
        DoSomething(...);
}

3- Write a script to trigger post back:

function TriggerPostBack(control, arg){
    __doPostBack(control, arg);
}

4- Call the PostBack trigger function when needed:

<a .... onclick="TriggerPostBack('control', 'arg')" .. /> 

Answer 2

In your case, why don't you use OnClientClick function of the button to call your javascript function?

Regards, S Mukherjee.

Answer 3

Yes by making use of PageMethods you can call the codebehind methods from javascript.

Check this link for more detail about pagemethods : http://aspalliance.com/1922_PageMethods_In_ASPNET_AJAX