Best way to pass an array from JavaScript to C#?

Question

I need to pass an array from JavaScript to a page method in C#. I have tried using a parameter in the C# method of IList and also a string[] array. Both ways throw an exception "cannot convert an object of type system.string to xxx", where xxx is the parameter type in the C# method. I am passing the object from jQuery as a json object, and looks like it is coming through properly. Here is what it looks like:

{"testNumbers":"5555555555,3333333333,4444444444"}

What am I doing wrong here?

EDIT: C# Code:

[WebMethod()]
public static void ProcessAction(string[] testNumbers)
{
    var dataProvider = new DataProvider();
    dataProvider.ProcessAction(testNumbers);
}

Powerlord · Accepted Answer · 2008-11-17 19:18:52Z

10

Hmm, two things:

JSON arrays have square brackets around them
JSON numbers aren't quoted.

Try this instead:

{"testNumbers": [5555555555,3333333333,4444444444]}

answered Nov 17, 2008 at 19:18

Powerlord

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GeekyMonkey · Accepted Answer · 2008-11-17 19:20:42Z

3

You need to use one of the .NET JSON Deserializers:

http://msdn.microsoft.com/en-us/library/bb299886.aspx

answered Nov 17, 2008 at 19:20

GeekyMonkey

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PhilHoy · Accepted Answer · 2008-11-17 19:21:58Z

0

{"testNumbers":["5555555555","3333333333","4444444444"]}

should i think do the trick along with a deserialiser. see http://www.json.org/ which has a great graphical representation of the json syntax.

answered Nov 17, 2008 at 19:21

PhilHoy

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