Parsing jQuery serialized data in C #

Question

I have a ListBox on my page. I am making an AJAX call to the C # function, and I need to pass the values ​​of the selected elements. Here is what I have:

$('#btnSubmit').click(function() {
    $.ajax({
        type: "POST",
        url: 'Default.aspx/GetSelectedValues',
        data: '{selectedValues: ' + $('#lbItems').serialize() + '}',
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: OnSuccess
    });
});

<select id="lbItems" multiple="multiple">
    <option value="1">One</option>
    <option value="2">Two</option>
    <option value="3">Three</option>
    <option value="4">Four</option>
    <option value="5">Five</option>
</select>


[System.Web.Services.WebMethod]
public static string GetSelectedValues(string selectedValues)
{
    //
}

The data passed to the C # function is as follows:

lbItems=1&lbItems=3&lbItems=5

Is there a built-in C # function that can easily deserialize to convert values ​​to some kind of array? Or maybe there is a better way to pass data from jQuery?

Answer 1

If you pass the parameters as JSON, .NET will automatically deserialize the JSON for you .

Answer 2

System.Web.HttpUtility.ParseQueryString

Answer 3

Split.

Just use string.Split with an ampersand to get an array of strings that are your individual arguments. Then cut each of these lines into an equal sign to get a two-element array, where element 0 is the name var and element 1 is the value.

Code example:

    string data = "lbItems=1&lbItems=3&lbItems=5";

    string[] items = data.Split(new char[]{'&'});

    foreach (string item in items)
    {
        string[] vals = item.Split(new char[]{'='});
        Console.WriteLine(vals[0] + ": " + vals[1]);
    }