title: xna: display 2d sprites behind the 3d object
body: <p>i am a beginner in 3d graphics thing and learning xna and csharp. </p>
  
  <p>i have 3d object that i want to draw in front of a 2d background,
  the 3d object is simple, it is just a line. i made it from 2 dimensional VertexPositionColor[].</p>
  
  <p>and then i drew it with PrimitiveType.LineStrip.</p>
  
  <p>and also i have a Texture2D that i displayed with Spritebatch.draw.</p>
  
  <p>what is happening is the line is displayed at the back of the background, so i cant see any line. </p>
  
  <p>but if i commented the spritebatch.draw, i can see the line there.</p>
  
  <p>please help..</p>