// TerrainPanel is a panel control object
Device = new D3d.Device( 0, D3d.DeviceType.Hardware, TerrainPanel, 
                D3d.CreateFlags.SoftwareVertexProcessing, PresentParams );

// and this is my render function that I call in the panels OnPaint method
void Render()
{
    if( Device == null )
        return;

    Device.Transform.Projection = Dx.Matrix.PerspectiveFovLH( 
        (float)Math.PI / 4.0f, 
        TerrainPanel.Width / TerrainPanel.Height, 
        1.0f, 
        100.0f 
        );

    Device.Transform.View = Dx.Matrix.LookAtLH(
        new Dx.Vector3(0, 0, 5.0f), 
        new Dx.Vector3(),
        new Dx.Vector3(0,1,0));

    Device.Transform.World = Dx.Matrix.Identity;

    Device.RenderState.Lighting = false;
    Device.RenderState.CullMode = D3d.Cull.None;

    Device.Clear( 
        D3d.ClearFlags.Target | D3d.ClearFlags.ZBuffer, 
        System.Drawing.Color.AliceBlue, 
        1.0f, 
        0 
        );

    D3d.CustomVertex.PositionColored[] verts = new D3d.CustomVertex.PositionColored[3];
    verts[0].Position = new Dx.Vector3(0.0f, 1.0f, 1.0f);
    verts[0].Color = System.Drawing.Color.Aqua.ToArgb();
    verts[1].Position = new Dx.Vector3(-1.0f, -1.0f, 1.0f);
    verts[1].Color = System.Drawing.Color.Black.ToArgb();
    verts[2].Position = new Dx.Vector3(1.0f, -1.0f, 1.0f);
    verts[2].Color = System.Drawing.Color.Purple.ToArgb();

    Device.BeginScene();
    
    Device.VertexFormat = D3d.CustomVertex.PositionColored.Format;
    Device.DrawUserPrimitives( D3d.PrimitiveType.TriangleList, 1, verts );

    Device.EndScene();

    Device.Present();
}