Problems displaying a trangle

I have a problem and can't display a trangle. I had followed the Managed D3D Tutorial and are programming with C#. Here's the code and also the attachment:

Code:

// Project Name: D3DTutorial
// D3DBlank.cs
using System;
using System.Drawing;
using System.Windows.Forms;
using Microsoft.DirectX;
using Microsoft.DirectX.Direct3D;
using Direct3D=Microsoft.DirectX.Direct3D;

public delegate void MessageDelegate(byte message); // Delegate for messages arriving via DirectPlay.
public delegate void AudioDelegate(); // Delegate to handle audio playback.
public delegate void PeerCloseCallback();           // This delegate will be called when the session terminated event is fired.

public class GraphicsClass : GraphicsSample
{
    private D3DXFont drawingFont = null;
    private Point destination = new Point(0, 0);

    public GraphicsClass()
    {            
        this.Text = "D3DTutorial";
        this.KeyDown += new KeyEventHandler(this.OnPrivateKeyDown);
        this.KeyUp += new KeyEventHandler(this.OnPrivateKeyUp);
        drawingFont = new D3DXFont( "Arial", System.Drawing.FontStyle.Bold );
    }

    /// <summary>
    /// Event Handler for windows messages
    /// </summary>
    private void OnPrivateKeyDown(object sender, KeyEventArgs e)
    {
        switch (e.KeyCode)
        {
            case Keys.Up:
            {
                destination.X = 1;
                break;
            }
            case Keys.Down:
            {
                destination.X = -1;
                break;
            }
            case Keys.Left:
            {
                destination.Y = 1;
                break;
            }
            case Keys.Right:
            {
                destination.Y = -1;
                break;
            }
        }
    }
    private void OnPrivateKeyUp(object sender, KeyEventArgs e)
    {
        switch (e.KeyCode)
        {
            case Keys.Up:
            case Keys.Down:
                destination.X = 0;
                break;
            case Keys.Left:
            case Keys.Right:
            {
                destination.Y = 0;
                break;
            }
        }
    }

    private VertexBuffer vertices;

    protected bool InitializeGraphics() {
        PresentParameters pres = new PresentParameters();
        pres.Windowed = true;
        pres.SwapEffect = SwapEffect.Discard;

        device = new Device(0,
            DeviceType.Hardware, this,
            CreateFlags.HardwareVertexProcessing, pres);
    
        vertices = CreateVertexBuffer(device);

        return true;
    }

    protected VertexBuffer CreateVertexBuffer(Device device) {
        device.VertexFormat = CustomVertex.TransformedColored.Format;

        CustomVertex.TransformedColored[] verts =
            new CustomVertex.TransformedColored[3];

        verts[0] = new CustomVertex.TransformedColored(
            this.Width/2, this.Height/4, 0.5f, 1.0f, Color.Red.ToArgb());

        verts[1] = new CustomVertex.TransformedColored(
            this.Width*3/4, this.Height*3/4, 0.5f, 1.0f, Color.Green.ToArgb());

        verts[2] = new CustomVertex.TransformedColored(
            this.Width/4, this.Height*3/4, 0.5f, 1.0f, Color.Blue.ToArgb());

        VertexBuffer vbuf = new VertexBuffer(
            typeof(CustomVertex.TransformedColored),
            verts.Length,
            device,
            0,
            CustomVertex.TransformedColored.Format,
            Pool.Default);

        GraphicsStream gs = vbuf.Lock(0, 0, 0);
        gs.Write(verts);
        vbuf.Unlock();

        return vbuf;
    }

    /// <summary>
    /// Called once per frame, the call is the entry point for 3d rendering. This 
    /// function sets up render states, clears the viewport, and renders the scene.
    /// </summary>
    protected override void Render()
    {

        //Clear the backbuffer to a Blue color 
        device.Clear(ClearFlags.Target | ClearFlags.ZBuffer, Color.Black, 1.0f, 0);
        //Begin the scene
        device.BeginScene();
        drawingFont.DrawText(5, 5, Color.White.ToArgb(), "X: " + destination.X + " Y: " + destination.Y);

        //
        // TODO: Insert application rendering code here.
        //
        device.SetStreamSource(0, vertices, 0);
        device.DrawPrimitives(PrimitiveType.TriangleList, 0, 1);

        device.EndScene();
        device.Present();
    }

    protected void DisposeGraphics() {
        device.Dispose();
    }

    /// <summary>
    /// Initialize scene objects.
    /// </summary>
    protected override void InitializeDeviceObjects()
    {
        drawingFont.InitializeDeviceObjects(device);

        //
        // TODO: Insert application device initialization code here.
        //
    }

    /// <summary>
    /// Called when a device needs to be restored.
    /// </summary>
    protected override void RestoreDeviceObjects(System.Object sender, System.EventArgs e)
    {
        //
        // TODO: Insert application device restoration code here.
        //
    }
}

I am reading the tutorial and entered the code as is in the Managed DirectX Tutorial using C# I saw the picture of the triangle that looks like this:

http://staff.develop.com/candera/images/screenshot.jpg

However, I don't get the picture of the trangle when I compile it using Visual C# .Net. I do notice that DirectX 9 Wizard had created a code and when I compile it, and build it, I saw an application with blue screen, but I changed it to black and I like it better.

Help would be appreciated.