C#获取程序启动目录

//WCF service:
 string servicePath = System.Web.Hosting.HostingEnvironment.MapPath("~");

 //F:\WorkSpace\EHR\src\vs2010\EHR\EHR\bin\Debug\
            string strBaseDirectory = System.AppDomain.CurrentDomain.BaseDirectory;

            //F:\WorkSpace\EHR\src\vs2010\EHR\EHR\bin\Debug\EHR.vshost.exe
            string strMainModule = System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName;

            //F:\WorkSpace\EHR\src\vs2010\EHR\EHR\bin\Debug
            string strCurrentDirectory = System.Environment.CurrentDirectory;

            //F:\WorkSpace\EHR\src\vs2010\EHR\EHR\bin\Debug
            string strGetCurrentDirectory = System.IO.Directory.GetCurrentDirectory();

            //F:\WorkSpace\EHR\src\vs2010\EHR\EHR\bin\Debug\
            string strApplicationBase = System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase;

            //F:\WorkSpace\EHR\src\vs2010\EHR\EHR\bin\Debug
            string strStartupPath=System.Windows.Forms.Application.StartupPath;

            //F:\WorkSpace\EHR\src\vs2010\EHR\EHR\bin\Debug\EHR.EXE
            string strExecutablePath = System.Windows.Forms.Application.ExecutablePath;