ASP.NET MVC - How to pass complex objects to a callback Action as callback arguments

This example demonstrates how to convert custom types to a JSON string on the client and parse this string on the server.

The conversion is performed using the $.toJSON function that is declared in the jquery.json-2.2.min file.

function GetSerializationData() {
    var editorsNames = ["Name", "Age", "Email", "ArrivalDate"];
    var editorsValues = {};
    for (var i = 0; i < editorsNames.length; i++) {
        var control = ASPxClientControl.GetControlCollection().GetByName(editorsNames[i]);
        editorsValues[control.name] = control.GetValue();
    }
    return $.toJSON(editorsValues);
}

The JavaScriptSerializer.Deserialize method parses the JSON string in a Controller's Action.

MyData GetSerializationObject() {
    string jsonText = Request.Params["SerializationData"];
    if (string.IsNullOrEmpty(jsonText))
        return null;
    MyData data = null;
    try {
        data = new JavaScriptSerializer().Deserialize<MyData>(jsonText);
    } catch {
        ViewData["ErrorMessage"] = "Incorrect data";
    }
    return data;
}

In this example, if it is not possible to deserialize user input, an exception is thrown.

Files to Review

• HomeController.cs
• CallbackPanelPartial.cshtml
• EditorsPartial.cshtml
• Index.cshtml

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