C#中避免相同MDI子窗口重复打开的方法

[code]     [code] // 是否已经打开了？（用循环来判断）

foreach (Form childrenForm in this.MdiChildren)

{

//检测是不是当前子窗体名称

if (childrenForm.Name == "FormExaminee")

    {

//是的话就是把他显示

childrenForm.Visible = true;

//并激活该窗体

childrenForm.Activate();

childrenForm.WindowState = FormWindowState.Maximized;

return;

}

}

//如果没有打开，则新建窗体

FormChild.FormExaminee formExaminee = new FormChild.FormExaminee();

formExaminee.MdiParent = this;

formExaminee.WindowState = FormWindowState.Maximized;

formExaminee.Show();