如何禁用使用c#调整窗体大小

this.FormBorderStyle = FormBorderStyle.FixedSingle; // 或者 FormBorderStyle.Fixed3D;

protected override void WndProc(ref Message m)
{
    const int WM_SYSCOMMAND = 0x0112;
    const int SC_SIZE = 0xF000;

    switch (m.Msg)
    {
        case WM_SYSCOMMAND:
            int command = m.WParam.ToInt32() & 0xfff0;
            if (command == SC_SIZE)
            {
                // 禁止调整窗体大小
                return;
            }
            break;
    }

    base.WndProc(ref m);
}

foreach (Control control in this.Controls)
{
    control.Enabled = false;
}