C# .NET - Problems creating a managed Direct X device (C#)

Hi

I'm having a problem creating a basic Direct X device, from a tutorial.
The code does nothing fancy - it creates a device, but it doesn't render anything. Its very basic. It compiles, no problem, but I get a runtime error that occurs when creating the device:

device = new Device(0, DeviceType.Hardware, this, CreateFlags.SoftwareVertexProcessing, presentParams);

The debugger says the following:

An unhandled exception of type 'Microsoft.DirectX.Direct3D.InvalidCallException' occurred in microsoft.directx.direct3d.dll
Additional information: Error in the application.

I've been updating everything (DirectX SDK, DirectX runtime, .NET servicepack) but nothing fixes the problem.

My graphics card is a GeForce 2 from 2001. I don't know if this matters...?

I really hope someone has an idea of what causes this runtime error.

/Henrik

I have built a 3d engine in c# without any problems, I don't see nothing wrong with your code. Can you show me how you have defined your "presentParams". The bug could be in there.

here is my init code for my engine:
PresentParameters parametres = new PresentParameters();
parametres.Windowed=true;
parametres.SwapEffect = SwapEffect.Discard;
parametres.AutoDepthStencilFormat = DepthFormat.D16;
parametres.EnableAutoDepthStencil = true;
device = new Device(0,DeviceType.Hardware,handle,CreateFlags.HardwareVertexProcessing,parametres);

notice that I used HardwareVertexProcessing. Its much faster than software since it use the hardware to procces the vertex. the handle is a pointer on a form

David

Hi - thanks for your reply.

Here is the code:

public void InitializeGraphics()
{
	PresentParameters presentParams = new PresentParameters();

	presentParams.Windowed = true;
	presentParams.SwapEffect = SwapEffect.Discard;

	device = new Device(0, DeviceType.Hardware, this, CreateFlags.SoftwareVertexProcessing, presentParams);
}


Yes - I guess HardwareVertexProcessing is faster, but the tutorial I follow, advice me to go for the SoftwareVertexProcessing to start with, as this should be the "safer" choice with an older graphics card (like mine) which might not support some features.

I've tried changing to HardwareVertexProcessing but the runtime error still occures...

/Henrik

Where is this methode, in your form class on in a independent class? 

The device = new device need to have a form handle to work on. In my case, I send a pointer from a pictureBox:

init (System.Windows.Forms.PictureBox handle)
{
...
...
device = new Device(0,DeviceType.Hardware,handle,CreateFlags.HardwareVertexProcessing,parametres);
...
...
}

in the form class, i call it like this:

init (this.myPictureBox);

of course, if you use a form insted, use a init (System.Windows.Forms.Form handle)

adn call it like this: 
init (this);
From the form class.

David Duguay