private void menuManagerInfo_Click(object sender, EventArgs e)
{
FrmManagerInfo frmMi = FrmManagerInfo.CreateForm(); //单例模式实例化对象
frmMi.Show();
frmMi.Focus();
}
} //用来存储单例出来的对象
/// <summary>
/// 单例模式下的对象创造方法
/// </summary>
/// <returns>实例的对象</returns>
public static FrmManagerInfo CreateForm()
{
if (_fromMi == null) //如果属性没有实例，才创造实例
{
_fromMi = new FrmManagerInfo();
}
return(_fromMi);
}
private void FrmManagerInfo_FormClosed(object sender, FormClosedEventArgs e)
{
_fromMi = null; //窗口关闭时清空实例
}