判断WinForm窗体是否已经打开

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;

namespace IceInk
{
    /// 

    /// //基于WinForm窗体的帮助类
    /// 
    public class EkWinFormHelper
    {

        /// 

        /// 判断窗体是否打开
        /// 
        /// 窗体类型
        /// 
        public static bool CheckIsOpenForm() where T : Form
        {
            Type wormType = typeof(T);

            foreach (Form frm in Application.OpenForms)
            {
                if (frm.Name.Equals(wormType.Name))
                {
                    return true;
                }
            }

            return false;
        }
    }
}