获取窗体最大化后的width, height

private void button1_Click(object sender, EventArgs e)
{
     int width1 = this.Width;
     this.FormBorderStyle = FormBorderStyle.None;
     this.WindowState = FormWindowState.Maximized;
     this.Update();
     int width2 = this.Width;
}

问题：
现在width1 等于 width2，怎么得到窗体最大化后的width呢？谢谢！
[解决办法]
this.WindowState = FormWindowState.Maximized;
Application.DoEvents();
int width2 = this.Width;