C#:Application操作（待补充）

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

namespace MyCommanHelper
{
    public class ApplicationHelper
    {

        /// <summary>
        /// 线程只运行一次
        /// </summary>
        /// <param name="frm">对话框程序</param>
        /// <param name="sProductName">产品名</param>
        /// <returns></returns>
        public static void RunOnlyOnce(Form frm, string sProductName)
        {
            bool createdNew = false;
            Mutex mutex = new Mutex(true, sProductName, out createdNew);
            if (createdNew)
            {
                Application.Run(frm);
                mutex.ReleaseMutex();
                mutex.Close();
                mutex.Dispose();
            }
            else 
            { 
                MessageBoxHelper.ShowInfoMessage(sProductName + "已经启动!");
            }
        }

        /// <summary>
        /// 设置漏斗光标
        /// </summary>
        public static void SetWaitCursor()
        {
            Cursor.Current = Cursors.WaitCursor;
        }

        /// <summary>
        /// 设置光标为默认值
        /// </summary>
        public static void ResetCursor()
        {
            Cursor.Current = Cursors.Default;
        }

        /// <summary>
        /// 处理当前在消息队列中的所有 Windows 消息。
        /// </summary>
        public static void DoEvents()
        {
            Application.DoEvents();
        }
    }
}