Winform 窗体的初始位置由上次关闭位置决定

private void Form1_Load(object sender, EventArgs e)
{
　　RegistryKey reg = Registry.CurrentUser.CreateSubKey("SoftWare\\MySoft");
　　int x = Convert.ToInt32(reg.GetValue("1"));
　　int y = Convert.ToInt32(reg.GetValue("2"));
　　this.Location = new Point(x, y);//可以转换成 Left 、Top 见 2.
}

private void Form1_FormClosed(object sender, FormClosedEventArgs e)
{
　　RegistryKey reg1 = Registry.CurrentUser;
　　RegistryKey reg2 = reg1.CreateSubKey("SoftWare\\MySoft");
　　reg2.SetValue("1", this.Location.X);
　　reg2.SetValue("2", this.Location.Y);
}