C#判断VS是否处于设计模式

public class CheckDesingModel

    {

        public static bool IsDesingMode()

        {

            bool ReturnFlag = false;

            if (LicenseManager.UsageMode == LicenseUsageMode.Designtime)

                ReturnFlag = true;

            else if (System.Diagnostics.Process.GetCurrentProcess().ProcessName == "devenv")

                ReturnFlag = true;

            //if (ReturnFlag)

            //    Msg.Warning("设计模式");

            //else Msg.Warning("非设计模式！");

            return ReturnFlag;

        }

    }