'System.NullReferenceException'

[Fallenarms3]

Ok, I know this is like, my 3rd thread this week, but I'm really kind of frustrated. I get this error when I try to deploy my latest project:

An unhandled exception of type 'System.NullReferenceException' occurred in ZuneGame1.exe

That's all it says. The breakpoint it creates is at

GraphicsDevice.Clear(Color.Black);

Of all things. I'm pretty sure that line of code is NOT incorrect, but I tried deleting it, and it just gave the same error and broke it at the next line. So I'm pretty sure everything works until it begins the Draw method.

Here's the code in its entirety: pastebin - collaborative debugging tool

[Red Sky]

I have a feeling that GraphicsDevice is null.

I don't see anything wrong with your code off-hand though...

[Fallenarms3]

Thanks for replying. With some help from the XNA forums, I got this sorted out.

Of course, that doesn't mean my blasted App runs....

[shutout5591]

System.NullReferenceException are one of the easiest exceptions to identify.

In C#, and most managed languages like Java, each variable like GraphicsDevice contains a reference in memory to the data for the object. so when this statement executes "WebClient client = new WebClient()" a webclient object is initialized, and client simply points to the webclient in memory.

So, when you get this error, you are trying to get the data from a reference that is not created yet. make sense?

A little debugging tip, putting your mouse over any variable (or type for that matter) in visual studio tells you the value of it. This will pin point which variable is declared (WebClient client but not initialized (client = new WebClient()

good luck on your app.