C# 将程序添加到启动项 （写入注册表），及从启动项中删除

#region 将程序添加到启动项
 /// <summary>
 /// 注册表操作，将程序添加到启动项
 /// </summary>
 public static void SetRegistryApp()
 {
     try
     {
         Microsoft.Win32.RegistryKey Reg;
         string ShortFileName = Application.ProductName;
         Reg = Microsoft.Win32.Registry.LocalMachine.OpenSubKey("Software\Microsoft\Windows\CurrentVersion\Run", true);
         if (Reg == null)
         {
             Reg = Microsoft.Win32.Registry.LocalMachine.OpenSubKey("Software\Microsoft\Windows\CurrentVersion\Run");
         }
         Reg.SetValue(ShortFileName, Application.ExecutablePath);
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.Message);
     }
 }
 #endregion

 #region 将程序从启动项中删除
 /// <summary>
 /// 注册表操作，删除注册表中启动项
 /// </summary>
 public static bool DeleteRegisterApp()
 {
     string ShortFileName = Application.ProductName;           //获得应用程序名

     try
     {
         Microsoft.Win32.RegistryKey Reg;
         Reg = Microsoft.Win32.Registry.LocalMachine.OpenSubKey("Software\Microsoft\Windows\CurrentVersion\Run", true);
         if (Reg == null)
         {
             Reg = Microsoft.Win32.Registry.LocalMachine.OpenSubKey("Software\Microsoft\Windows\CurrentVersion\Run");
         }
         Reg.DeleteValue(ShortFileName, false);
     }
     catch (Exception ex)
     {
         return false;
     }

     return true;
 }
 #endregion

 /// <summary>
 ///     检查当前程序是否在启动项中
 /// </summary>
 /// <returns></returns>
 public static bool CheckExistRegisterApp()
 {
     string ShortFileName = Application.ProductName;           //获得应用程序名
     bool bResult = false;

     try
     {
         Microsoft.Win32.RegistryKey Reg;
         Reg = Microsoft.Win32.Registry.LocalMachine.OpenSubKey("Software\Microsoft\Windows\CurrentVersion\Run", true);
         if (Reg == null)
         {
             Reg = Microsoft.Win32.Registry.LocalMachine.OpenSubKey("Software\Microsoft\Windows\CurrentVersion\Run");
         }

         foreach (string s in Reg.GetValueNames())
         {
             if (s.Equals(ShortFileName))
             {
                 bResult = true;
                 break;
             }
         }
     }
     catch (Exception ex)
     {
         return false;
     }

     return bResult;
 }