Draw 2dline Using XNA 4.0

Draw 2dline Using XNA 4.0

how to draw line using XNA 4.0 from Touch gestures
public void DrawLine(SpriteBatch sb, Vector2 start, Vector2 end, Texture2D texture) {
        Vector2 NStart=new Vector2(20, 20);
        Vector2 NEnd = new Vector2(120, 120);
        Rectangle rec = new Rectangle((int)NStart.X, (int)NStart.Y, 10, 10);
        Vector2 edge = NStart - NStart;



        spriteBatch.Begin();

        texture = Content.Load<Texture2D>("Blue");

        spriteBatch.Draw(texture, NStart, null, Color.Black,
                     (float)Math.Atan2(NEnd.Y - NStart.Y, NEnd.X - NStart.X),
                     NStart,
                     NEnd,
                     SpriteEffects.None, 0);





        spriteBatch.End();


    }