What is the method for extracting the value of a JavaScript variable using the .Net framework or C# programming language?

Question

What is the method for extracting the value of a JavaScript variable using the .Net framework or C# programming language?

Looking at the code snippet below, I am trying to extract the values of title and videoId. These elements are part of the session, which is nested within units. I am unsure how to retrieve their values using C# or the .Net framework.
Can anyone help me with extracting these values? If so, what would be the best approach to do so?

<script>
  
var MainData = {
            config: {
                debug: false
            },
            server: {
                "deviceDownloadCardData": [],
                "pageData": {
                    "legacyRendered": false,
                     "unitsData": {
                        "isTeacher": false,
                        "isAdmin": false,
                        "units": [
                            {
                                "id": 468400,
                                "sessions": [
                                    {
                                        "id": 2472822,
                                        "title": "Introduction",
                                        "videoId": "bc:123456789",
                                       "playerID": 3890928181001,
                                    }
                                ] 
                             }
                        ],
                    },
                    "videoPlayerData": {
                        "totalSessionsDuration": "14m",
                        "units": [
                            {
                                "id": 468400,
                                "sessions": [
                                    {
                                        "id": 2472822,
                                        "title": "Introduction",
                                        "videoId": "bc:123456789",
                                        "playerID": 3890928181001, 
                                    }
                                ]
                            }
                        ]
                    }
                }
            }
};

javascript c#.net

Answer 1

Answer №1

It seems like you are looking to transfer data from the client-side JavaScript to the server-side C# code.

If you are working with a WebApplication using MVC, then it operates on the server-side. To transmit data from the client to the server, you can achieve this by making an HTTP post call. In ASP.NET WebApplication, you can set up a WebAPI endpoint to handle such requests.

I recommend familiarizing yourself with WebAPI concepts and understanding how HTTP requests work.

If you are utilizing jQuery on the client-side, you can use code similar to this to send the data:

var session = MainData.server.pageData.unitsData.units[0].sessions[0];

console.log(session);

$.post("api/sessions",
    {
        "session": JSON.stringify(session)
    }
).done(function () {
    alert("Call was successful");
}).fail(function () {
    alert("Something went wrong!");
});

You would then need to create a WebAPI controller like the following:

// Define a C# class representing your session
public class SessionModel
{
    public int id { get; set; }
    public string title { get; set; }
    public string videoId { get; set; }
    public int playerId { get; set; }
}

// Create an ApiController for handling sessions, with a post method...
public class SessionsApiController : ApiController
{
    [HttpPost]
    public IHttpActionResult PostSession(SessionModel model)
    {
        // Utilize the session model as needed
        return Ok(); // Return a success action result
    }
}

Answer 2

It seems like you are looking to transfer data from the client-side JavaScript to the server-side C# code.

If you are working with a WebApplication using MVC, then it operates on the server-side. To transmit data from the client to the server, you can achieve this by making an HTTP post call. In ASP.NET WebApplication, you can set up a WebAPI endpoint to handle such requests.

I recommend familiarizing yourself with WebAPI concepts and understanding how HTTP requests work.

If you are utilizing jQuery on the client-side, you can use code similar to this to send the data:

var session = MainData.server.pageData.unitsData.units[0].sessions[0];

console.log(session);

$.post("api/sessions",
    {
        "session": JSON.stringify(session)
    }
).done(function () {
    alert("Call was successful");
}).fail(function () {
    alert("Something went wrong!");
});

You would then need to create a WebAPI controller like the following:

// Define a C# class representing your session
public class SessionModel
{
    public int id { get; set; }
    public string title { get; set; }
    public string videoId { get; set; }
    public int playerId { get; set; }
}

// Create an ApiController for handling sessions, with a post method...
public class SessionsApiController : ApiController
{
    [HttpPost]
    public IHttpActionResult PostSession(SessionModel model)
    {
        // Utilize the session model as needed
        return Ok(); // Return a success action result
    }
}

What is the method for extracting the value of a JavaScript variable using the .Net framework or C# programming language?

Answer №1

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