private void LoadMesh(string path)
        {
            ExtendedMaterial[] exMaterials;

            
            pond = Mesh.FromFile(
                path,       
                MeshFlags.SystemMemory,
                device,
                out exMaterials);

            
            materials = new Material[exMaterials.Length];

            
            for (int i = 0; i < exMaterials.Length; ++i)
            {
                materials = exMaterials.Material3D;
                materials.Ambient = materials.Diffuse;
            }
        }

Microsoft.DirectX.Direct3D.Direct3DXException was unhandled  Message="Error in the application."  Source="Microsoft.DirectX.Direct3DX"  ErrorCode=-2147467259  ErrorString="E_FAIL"  StackTrace:       at Microsoft.DirectX.Direct3D.Mesh.FromFile(String filename, MeshFlags options, Device device, GraphicsStream& adjacency, ExtendedMaterial[]& materials, EffectInstance[]& effects)       at Microsoft.DirectX.Direct3D.Mesh.FromFile(String filename, MeshFlags options, Device device, ExtendedMaterial[]& materials)       at Main.WinForm.LoadMesh(String path) in C:\Documents and Settings\family\My Documents\Visual Studio 2005\Projects\DirectX Practice - the real deal!\DirectX Practice - the real deal!\Program.cs:line 163       at Main.WinForm.Main() in C:\Documents and Settings\family\My Documents\Visual Studio 2005\Projects\DirectX Practice - the real deal!\DirectX Practice - the real deal!\Program.cs:line 31       at System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args)       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)       at System.Threading.ThreadHelper.ThreadStart()

using System;using System.Drawing;using System.Windows.Forms;using Microsoft.DirectX;using Microsoft.DirectX.Direct3D;using Microsoft.DirectX.DirectInput;using System.IO;namespace Main{    public class WinForm : System.Windows.Forms.Form    {        private Microsoft.DirectX.Direct3D.Device device;        private Microsoft.DirectX.DirectInput.Device keyb;        private Mesh pond;        private Material[] materials;                private System.ComponentModel.Container components = null;        static void Main()        {            WinForm window = new WinForm();            window.InitializeDevice();            window.InitializeKeyboard();            window.LoadMesh("C:/Documents and Settings/Kenny/My Documents/Visual Studio 2005/Projects/DirectX Practice/DirectX Practice/bin/Debug");            Application.Run(window);            //Free the window            window.Dispose();        }        public WinForm()        {            InitializeComponent();        }        public void InitializeDevice()        {            PresentParameters presentParams = new PresentParameters();            presentParams.Windowed = true;            presentParams.SwapEffect = SwapEffect.Discard;                        //Create the device            device = new Microsoft.DirectX.Direct3D.Device(                0,                                      //Select the first graphical adapter                Microsoft.DirectX.Direct3D.DeviceType.Hardware,//Hardware rendering                this,                                   //Bind the window to the device                CreateFlags.SoftwareVertexProcessing,   //CPU vertex processing                presentParams);                         //Pass the parameters        }        protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)        {            device.Clear(                ClearFlags.Target,      //Clear the target, the window                Color.DarkSlateBlue,    //Fill the screen this color                1.0f,                   //!!!!!!!!!!!!!!!!!!!!!!!!                0);                     //!!!!!!!!!!!!!!!!!!!!!!!!            //!!!!!!!!!!!!!            device.BeginScene();            RenderMesh();            //!!!!!!!!!!!!!            device.EndScene();            //!!!!!!!!!!!!!            device.Present();            ReadKeyboard();        }        private void InitializeComponent()        {            //!!!!!!!!!!!!!!!!            this.components = new System.ComponentModel.Container();            this.Size = new Size(500, 500);            this.Text = "App title";        }        public void InitializeKeyboard()        {            //Set the device to use the default keyboard            keyb = new Microsoft.DirectX.DirectInput.Device(SystemGuid.Keyboard);            //If the window loses focus, ignore the keyboard            keyb.SetCooperativeLevel(this, CooperativeLevelFlags.Background | CooperativeLevelFlags.NonExclusive);            //!!!!!!!!!!!!!!!!!            keyb.Acquire();        }        private void ReadKeyboard()        {            //Set a variable to read the keys            KeyboardState keys = keyb.GetCurrentKeyboardState();                        //Read the keys            if (keys[Key.UpArrow])            {                ///////////////            }            if (keys[Key.DownArrow])            {                ///////////////            }        }        private void CameraPositioning()        {            device.Transform.Projection =                Matrix.PerspectiveFovLH(                (float)Math.PI / 4,         //View angle                this.Width / this.Height,   //Aspect ratio                1f,                         //Near clip plane                50f);                       //Far clip plane            device.Transform.View = Matrix.LookAtLH(                new Vector3(0, 0, 30),  //Camera position                new Vector3(0, 0, 0),   //Where to point the camera                new Vector3(0, 1, 0));  //What to be 'up'            //Set lighting on            device.RenderState.Lighting = true;            //Set culling            device.RenderState.CullMode = Cull.None;            //Set light type            device.Lights[0].Type = LightType.Directional;            //Set light colour            device.Lights[0].Diffuse = Color.White;            //Light direction            device.Lights[0].Direction = new Vector3(0.8f, 0, -1);            //Enable the lights            device.Lights[0].Enabled = true;        }        private void LoadMesh(string path)        {            //Used for loading the meshes information            ExtendedMaterial[] exMaterials;            pond = Mesh.FromFile(                path,                   //File path                MeshFlags.SystemMemory, //                device,                 //Device reference                out exMaterials);       //Hold the information            materials = new Material[exMaterials.Length];            for (int i = 0; i < exMaterials.Length; ++i)            {                materials = exMaterials.Material3D;                materials.Ambient = materials.Diffuse;            }        }        private void RenderMesh()        {            for (int i = 0; i < materials.Length; ++i)            {                device.Material = materials;                pond.DrawSubset(i);            }        }    }}