c# - Monogame - Changing background colour error -

i'm building 2d platformer , want have different colour backgrounds each level. i've made object when collided with, places character onto next level changing player.position, so...

protected override void update(gametime gametime){      if (player.bounds.intersects(teleportobj.bounds))     {         graphicsdevice.clear(color.slategray); // fails change bg color         player.position = new vector2(172, 0); // changes character position         mediaplayer.play(dungeonsong);  // plays new song         mediaplayer.isrepeating = true;  // repeats new song     } } 

i have set background first level begin in game1's draw() function this:

graphicsdevice.clear(color.cornflowerblue); 

but when player collides teleportobj, the background color doesn't change.

graphicsdevice.clear(color.slategray); used in draw function. try creating new color variable, , change variable in update method, , when using graphicsdevice.clear(name of variable);, use in draw function.

code this:

color backgroundcolor = color.cornflowerblue; protected override void update(gametime gametime) {         if (player.bounds.intersects(teleportobj.bounds))     {         backgroundcolor = color.slategray;         player.position = new vector2(172, 0);          mediaplayer.play(dungeonsong);         mediaplayer.isrepeating = true;     }     else backgroundcolor = color.cornflowerblue;  }  protected override void draw(spritebatch spritebatch) {         graphicsdevice.clear(backgroundcolor);     *draw other stuff* }