禁用Windows窗体的关闭按钮

protected override void OnFormClosing(FormClosingEventArgs e)
{
e.Cancel = true;
base.OnFormClosing(e);
}

private bool isEnableCloseButton = false;
protected override CreateParams CreateParams
{
get
{
if (isEnableCloseButton)
{
CreateParams parameters = base.CreateParams;
return parameters;
}
else
{
int CS_NOCLOSE = 0x200;
CreateParams parameters = base.CreateParams;
parameters.ClassStyle |= CS_NOCLOSE;
return parameters;
}
}
}