Error Detected: the C# script is not compatible with Javascript and is causing

Question

Error Detected: the C# script is not compatible with Javascript and is causing

I am facing an issue where I can successfully send information from the database, but I am unable to load the table on the page. When I check the data received with an alert, it appears to be in JSON format, but it still displays the wrong image on the webpage. How can this be rectified?

Below is my HTML code:

<!DOCTYPE html>
<script src="Scripts/knockout-3.4.2.js" type="text/javascript"></script>
<script src="Scripts/jquery-3.1.1.min.js"></script>
...

And this is my Backend Code snippet:

[WebMethod]
        public static string GonderUrunler()
        {
            denemeDBEntities db = new denemeDBEntities();
            var result = from d in db.urunler.ToList()
                         select d;
            string output = new JavaScriptSerializer().Serialize(result);
            return output;
        }

javascript jquery ajax knockout.js

Answer 1

Answer №1

To ensure that your ajax request works asynchronously, it is imperative to use a callback function. For more information on this topic, refer to this document.

 $(document).ready(function () {

      function functionViewModel(callback) {
            $.ajax({
                type: "POST",
                url: "KnockoutGrid2.aspx/GonderUrunler",
                data: "{}",
                contentType: "application/json; charset=utf-8",
                dataType: "json",
                success: function (msg) {
                  callback({friends: ko.observableArray(msg.d)});
                }
            });
    };

    functionViewModel(function(response){
       ko.applyBindings(response.friends)
    });
});

Answer 2

To ensure that your ajax request works asynchronously, it is imperative to use a callback function. For more information on this topic, refer to this document.

 $(document).ready(function () {

      function functionViewModel(callback) {
            $.ajax({
                type: "POST",
                url: "KnockoutGrid2.aspx/GonderUrunler",
                data: "{}",
                contentType: "application/json; charset=utf-8",
                dataType: "json",
                success: function (msg) {
                  callback({friends: ko.observableArray(msg.d)});
                }
            });
    };

    functionViewModel(function(response){
       ko.applyBindings(response.friends)
    });
});

Answer 3

Answer №2

Are you aware if the variable 'friends' is actually defined and is of type array? It appears that in your foreach template, you are referencing it. Knockout seems to be having trouble loading the array...

<tbody data-bind="foreach:friends">

Answer 4

Are you aware if the variable 'friends' is actually defined and is of type array? It appears that in your foreach template, you are referencing it. Knockout seems to be having trouble loading the array...

<tbody data-bind="foreach:friends">

Answer 5

Answer №3

When you receive a JSON-formatted string from the WebMethod, it must be deserialized in your JS code to work with the data within. This can be achieved using JSON.parse:

success: function (msg) {
  var data = JSON.parse(msg);
  console.log(data[0].id);
  console.log(data[0].name);
}

It's important to remember that data will be an array, so if you want to access all the information within it, a loop will be necessary. Additionally, when debugging, always rely on console.log or console.dir; using alert() can lead to unreliable type coercion.

Answer 6

When you receive a JSON-formatted string from the WebMethod, it must be deserialized in your JS code to work with the data within. This can be achieved using JSON.parse:

success: function (msg) {
  var data = JSON.parse(msg);
  console.log(data[0].id);
  console.log(data[0].name);
}

It's important to remember that data will be an array, so if you want to access all the information within it, a loop will be necessary. Additionally, when debugging, always rely on console.log or console.dir; using alert() can lead to unreliable type coercion.

Error Detected: the C# script is not compatible with Javascript and is causing

Answer №1

Answer №2

Answer №3

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