How to call C# class method using Javascript?

Question

I have created Class under App_Code folder there i have created method. I need to call that class method using JavaScript from Sample.aspx file.

Class:

namespace ContactBook.App_Code
{
    //The function need to call...
    public class ContactBook_functionalities
    {
        public static bool MyFunction(string email, string contact)
            {
                 //Code...
            }
    }
}

JavaScript:

<script type="text/javascript">
        function callMyFunc(email, contact)
        {
             //var x = MyFunction(string email, string contact);
        }
</script>

[WebMethod] is not working for Class functions.

Hi, please check my answer below. You can press the upvote (upward arrow) if you find the answer helpful. — Allan Chua
– Allan Chua, Commented Sep 2, 2015 at 7:25

Radu · Accepted Answer · 2015-09-02 07:22:50Z

1

I don't thing you can do that because:

ASPX is server side, whereas JavaScript is client side
some components from a ASP site are compiled

What you can do is expose a route (if you were using MVC desing pattern) on the server that calls that function (or an Api for that mather).

answered Sep 2, 2015 at 7:22

Radu

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1 Comment

KarthikeyanMlp Over a year ago

In that am not using any MVC desing pattern.

Allan Chua · Accepted Answer · 2015-09-02 07:46:09Z

0

You need to expose an HTTP handler in ASP.net or Controllers / Web API in MVC for your JavaScript to have the capability of talking to the server. Simple classes are not accessible outside ASP.net Application via JavaScript.

After creating your own controller/HTTP handler, you need to send an AJAX request to the controller and it should look like this code below:

 $.ajax({
   url: "sampleurlhere",
   type: "POST"//POST or GET,
   data: {
       id: "sample id as parameter"
   },
   success: function(e) {
    //this event fires up when response arrives.
   }
 })

edited Sep 2, 2015 at 7:46

answered Sep 2, 2015 at 7:22

Allan Chua

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5 Comments

KarthikeyanMlp Over a year ago

From that am not using any MVC desing pattern, So Controller is not in my Project.

Allan Chua Over a year ago

@karthikeyanmlp, you can look on the links I provided on how to use HTTP handlers in ASP.net

KarthikeyanMlp Over a year ago

How can i call the Handler_function with arguments using JavaScript? I think that the below is only way to call Handler "localhost/HttpHandler/test.sample"

KarthikeyanMlp Over a year ago

How can i call the Handler_function with FunctionName using JavaScript? I think that the below is only way to call Handler "localhost/HttpHandler/test.sample" And also i have use that Class_methods from CodeBehing file. If am write Handler, for the same operation, I need to write twice. For Class and handler. That is also makes problem on future because i need to update those not a single. Is there no other way to use class_methods directly???

Allan Chua Over a year ago

@karthikeyanmlp, please check the code I gave you. Each property of the data object is equivalent of an argument on the handler method

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