C#

public Form1()<br />
{<br />
    InitializeComponent();<br />
    this.button1.BackColor = Color.Red; // This line has no effect in the designer<br />
}<br />

private bool allowPaint = false;

protected override void OnPaint(PaintEventArgs e)
{
	if(this.allowPaint)
	{
		base.OnPaint (e);
	}

	this.allowPaint = false;
}

protected override void OnResize(EventArgs e)
{
	this.allowPaint = true;

	base.OnResize (e);
}

protected override void OnMove(EventArgs e)
{
	this.allowPaint = true;

	base.OnMove (e);
}