private void DrawSpritesRect() { if ((sheet != null)) { primitiveBatch.Begin(PrimitiveType.LineList); foreach (SpriteDefinition sprite in sheet) { if (SelectedSprite != sprite) { primitiveBatch.AddRect(sprite.Rectangle, Color.DarkGreen); } } if (SelectedSprite != null) { primitiveBatch.AddRect(SelectedSprite.Rectangle, Color.LightGreen); } primitiveBatch.End(); } }