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how to move 3d object in XNA?

float dirX = (float)Math.Sin(angle);

float dirY = (float)Math.Cos(angle);

 

if (Keyboard.GetState().IsKeyDown(Keys.Up))

        {

            position += new Vector3(-dirX, dirY, 0);

 

            if (Keyboard.GetState().IsKeyDown(Keys.Left))

            {

                angle += 0.015f;

            }

 

            if (Keyboard.GetState().IsKeyDown(Keys.Right))

            {

                angle -= 0.015f;

            }

        }

       

world = Matrix.CreateTranslation(position) * Matrix.CreateRotationY(angle) * Matrix.CreateFromAxisAngle(Vector3.UnitX, MathHelper.ToRadians(-90));

       

float dirX = (float)Math.Sin(angle);

float dirZ = (float)Math.Cos(angle);

 

position += new Vector3(dirX, 0, dirZ);

       

Scale * Rotation * Translation

       

// this will rotate car around the Y axis, and then translate it to correct location

world = Matrix.CreateRotationY(angle) * Matrix.CreateTranslation(position);