Windows Runtime component returns null string

Question

Hello,

This question should be very simple but I couldn't find any clue.

I have a class A within a Windows Runtime component (using C#), which has a property b returning a string.

When I used A.b in JavaScript, always got "Invalid point" and "Value cannot be null" in the case when b is null.

It's like this:

// C#

sealed public class A

{

    public string b { get { return null; }}

}

// JavaScript

var objA = ....; // initialize A

function test()

{

   var value_b = objA.b;   // throws nullpointer exception

}

Thanks a lot!

Answer 1

An ArgumentNullException exception is thrown when a method is invoked and at least one of the passed arguments is null but should never be null.

And I don't think WinRT component accept null value even string is capable with null. But you could use String.Empty instead.

--James

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Answer 2

Thanks.