ASP.NET Call C# Functions From JavaScript

Question

I Have a small working application on ASP.NET and C# and I would like to add some Javascript to it.

I know that for example I can use the Confirm button and then do something on yes or no.

What I would like to do is call some of the functions I have in the code-behind, depending on the answer to the Confirm Button.

How do I go about this? Many Thanks!

Could you be more specific? Explain what you **exactly** want, what is are goals and requirements? — Caspar Kleijne, May 12 '11 at 21:25
See this question: http://stackoverflow.com/questions/3713/call-asp-net-function-from-javascript — Aaron Daniels, May 12 '11 at 21:26

Code Maverick · Accepted Answer · 2013-08-19T22:25:20.583

3

Simple.

Put a hidden div on your aspx page that contains button triggers to your methods:

<div style="display: none">
     <asp:Button ID="TriggerMethod1" runat="server" />
</div>

In your javascript, in the confirm part of your code simply do:

__doPostBack('TriggerMethod1', '');

And in your code-behind, handle up that button click to call Method1.

edited Aug 19 '13 at 22:25

answered May 12 '11 at 21:30

Code Maverick

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I personally use jQuery, and just trigger the click with: `$("#TriggerMethod1").click();`. – Code Maverick May 12 '11 at 21:31
Thanks! This is what i was looking for. Clear and Concise! – NicoTek May 12 '11 at 22:30

score 1 · Answer 2 · answered May 12 '11 at 21:28

1

I would create an ASHX handler file and post back to the hander using jQuery ajax methods.

See an article on this here:

Using jQuery in ASP.NET apps with httphandlers

answered May 12 '11 at 21:28

Mike Marshall

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score 1 · Answer 3 · answered May 12 '11 at 21:29

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')" .. />

score 0 · Answer 4 · edited May 23 '17 at 12:23

0

Have you tried to use the search first in the site!! Call ASP.NET function from JavaScript? Calling functions from an ASP.NET code file with javascript

or https://stackoverflow.com/search?q=Call+C%23+Functions+From+JavaScript

edited May 23 '17 at 12:23

Community

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answered May 12 '11 at 21:29

Ahmed Magdy

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I'm just guiding him to search before he asks as we all do. And sorry if it was by a hard way – Ahmed Magdy May 12 '11 at 21:33

ASP.NET Call C# Functions From JavaScript

4 Answers4