Does anyone know if it is possible to call a C# method from a javascript in ASPX page

LeoMathew · November 18th, 2009, 09:31 AM

Does anyone know if it is possible to call a C# method from a javascript in theASPX page?

e.g:- I have ASPX page (Page1) and a different C# file (File1, which is not the code-behind file of Page1).

dparsons · November 18th, 2009, 09:48 AM

No you can't do that. Depending on what the Method does in the C# class you could setup an AJAX style request, however, this would require you to create a webpage that linked up to the C# file.

What are you trying to do?

LeoMathew · November 18th, 2009, 09:54 AM

From the javascript in the aspx page 1, the control goes to different C# file1 by the javascript call.

In C# file1, i have a validation(which inturn calls Oracle stored proc) to check if it is success or failure. Right now success and failure message are hardcoded and shown in the Web page based on whether exception is thrown or not.

But going forward , they would have some message coming back from the stored proc which i need to show in the Web page.

Thats what i am trying to see if that is possible.

dparsons · November 18th, 2009, 10:03 AM

Ya you can not directly access a C# class file via JavaScript, however, Microsoft does provide you with some funcationality that makes this somewhat possible. Since you are using .NET 1.x you do not have the luxary of using [WebMethod] to expose Server Side events to your JavaScript but you can setup a Script Callback. This essentially allows you to call a server side method directly from your JavaScript.

Understand though you can't call the C# file directly. The Script Callback must call a Method that exists in your ASPX page and that method can then call your C# file.

Here is how to setup a Script Callback: http://www.codeguru.com/csharp/.net/...icle.php/c9679

hth.
-Doug

LeoMathew · November 18th, 2009, 10:09 AM

Thanks. I will go through the article and see how it can be done.