Executing a C# method from within a .js file using a Javascript function in a .cs file

Question

Executing a C# method from within a .js file using a Javascript function in a .cs file

I've made some updates based on the responses provided. My main area of confusion lies in the 'data' parameter and how to handle it in the JavaScript call.

C# method

[HttpPost]
        public string GetPreviewURL(string activityID)
        {
            try
            {
                var requestContext = ContextHandler.GetRequestContext(Request);

                object[] arguments = new object[] { requestContext };
                var sew= SumtContainer.Resolve<ICLWOrker>(typeof(ICLWOrker).FullName, arguments);

                return sew.GetPreviewUrl(activityID);
            }
            catch (Exception e)
        }

When making this JS call, I believe the parameter after "POST" should be 'data', but I'm unsure about extracting the URL from the JSON data.

apiAccessClient = new apiClient();
        var apiUrl = STRING_SITE_PREFIX + '/service/webapi/GetPreviewURL/?activityID=' + actId;
        //How do I define 'data' here?
        apiAccessClient.send(STRING_USERMODE, apiUrl, "POST", data, onPreviewSuccess, onError, 0, null, false, false, true); 
        return;

The setup for apiAccessClient is currently in a separate JavaScript file where the Ajax call is configured

$.ajax({
    type: this.requestType,
    url: this.apiUrl,
    contentType: "application/json; charset=utf-8",
    context: this,
    async: isAsync,
    data: JSON.stringify(flattenModel(this.parameters)),
    statusCode: {
        401: function () { _UTL_NavigateToTimeOutPage(); }
    },
    beforeSend: function (request) {
        // Set headers here
    },
    success: function (data, statusCode, jqXHR) {
        // Handle success response
    },
    error: function (jqXHR, textStatus, errorThrown) {
        // Handle error response
    }
});

Could someone provide guidance on how to open the URL received in a new window?

Appreciate your assistance!

javascript c#ajax

Answer 1

Answer №1

It's important to note that JavaScript runs on the client side, while C# runs on the server side. If you want to call a method, you'll need to use AJAX. Here is an example of what the client side code could look like:

function launchURL_Test() {
var ID="your id";


 $.ajax({
    type: "POST",
    url: "yourcontroller/GetUrl",
    contentType: "application/json;charset=utf-8",
    data: "{'id':'" + ID + "'}",
    dataType: "json",
    success: function (data) {

      // do something with the result...

    },
    error: function (result) {
        console.log('error')

    }
});
}

If you are not using a controller and instead using code-behind, your method should be structured like this:

[WebMethod]
public static string GetUrl(string id)
{
   //some code
   return url;
}

In a standard MVC Controller, your method would be formatted like this:

[HttpPost]
public ActionResult GetUrl(string id)
{
    //your code
    return url;
}

Finally, to open a new window with the URL from the method, update your ajax success function like so:

success: function (data) {

  window.open(data);

},

Answer 2

It's important to note that JavaScript runs on the client side, while C# runs on the server side. If you want to call a method, you'll need to use AJAX. Here is an example of what the client side code could look like:

function launchURL_Test() {
var ID="your id";


 $.ajax({
    type: "POST",
    url: "yourcontroller/GetUrl",
    contentType: "application/json;charset=utf-8",
    data: "{'id':'" + ID + "'}",
    dataType: "json",
    success: function (data) {

      // do something with the result...

    },
    error: function (result) {
        console.log('error')

    }
});
}

If you are not using a controller and instead using code-behind, your method should be structured like this:

[WebMethod]
public static string GetUrl(string id)
{
   //some code
   return url;
}

In a standard MVC Controller, your method would be formatted like this:

[HttpPost]
public ActionResult GetUrl(string id)
{
    //your code
    return url;
}

Finally, to open a new window with the URL from the method, update your ajax success function like so:

success: function (data) {

  window.open(data);

},

Executing a C# method from within a .js file using a Javascript function in a .cs file

Answer №1

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