Something

public override void Update( GameTime gameTime ) {
            kbs = Keyboard.GetState();
            bool c_up = false;
            bool c_left = false;
            bool c_down = false;
            bool c_right = false;

            foreach ( BlockManager.block bs in b.blocks ) {
                if ( bs.Rect.Intersects( new Rectangle( ( int ) Position.X, ( int ) Position.Y - 1, 32, 32 ) ) ) {
                    c_up = true;
                    break;
                }
                if ( bs.Rect.Intersects( new Rectangle( ( int ) Position.X, ( int ) Position.Y + 33, 32, 32 ) ) ) {
                    c_down = true;
                    break;
                }
                if ( bs.Rect.Intersects( new Rectangle( ( int ) Position.X - 1, ( int ) Position.Y, 32, 32 ) ) ){
                    c_left = true;
                    break;
                }
                if ( bs.Rect.Intersects( new Rectangle( ( int ) Position.X + 33, ( int ) Position.Y, 32, 32 ) ) ){
                    c_right = true;
                    break;
                }
            }
            if ( kbs.IsKeyUp( Keys.Up ) && !c_up ) {
                Position.Y++;
            }
            if ( kbs.IsKeyUp( Keys.Down ) && !c_down ) {
                Position.Y--;
            }
            if ( kbs.IsKeyUp( Keys.Right ) && !c_right ) {
                Position.X--;
            }
            if ( kbs.IsKeyUp( Keys.Left ) && !c_left ) {
                Position.X++;
            }
            base.Update( gameTime );
        }