C# Pathでは、ファイルパスの取得について質問があります。

string Current = Directory.GetCurrentDirectory();//Get the current root directory
//private string strFilePath = Application.StartupPath + "\\\" + "FileConfig.ini";//Get the INI file path
//MessageBox.Show("strFilePath: "+strFilePath);
//Show("Application.StartupPath: " + Application.StartupPath+"\\\");
//MessageBox.Show("Current: " +Current);
//Show("ExecutablePath: " + System.Windows.Forms.Application;
//MessageBox.Show("Directory name: {0}", Path.GetDirectoryName(strFilePath));
Show("Path extension: {0}", Path.GetExtension(strFilePath)); //MessageBox.Show("Path extension: {0}", Path.GetExtension(strFilePath));
Show("File name: {0}", Path.GetFileName(strFilePath)); //MessageBox.Show("File name: {0}", Path;
Show("Name without extension: {0}", Path.GetFileNameWithoutExtension(strFilePath)); //MessageBox.Show("Name without extension: {0}", Path;
//MessageBox.Show("Absolute full path: {0}", Path.GetFullPath(strFilePath));
//MessageBox.Show("Root directory: {0}", Path.GetPathRoot(strFilePath));
Show("Path without root directory: {0}", Path.GetFullPath(strFilePath).Remove(0, 3)); //MessageBox.Show("Path without root directory: {0}", Path;
//MessageBox.Show(System.Windows.Forms.Application.StartupPath);
Show(strFilePath); //MessageBox.Show(strFilePath);
//Show(Application.ExecutablePath);
//Show(AppDomain.CurrentDomain.BaseDirectory);
//MessageBox.Show(Thread.GetDomain().BaseDirectory);
//Show(Environment.CurrentDirectory);
//Show(Directory.GetCurrentDirectory());
//Show(Assembly.GetExecutingAssembly().Location);

Application.StartupPath // Gets the path to the executable that started the application, excluding the name of the executable.  
  Application.ExecutablePath // Gets the path to the executable that started the application, including the name of the executable.   
AppDomain.CurrentDomain.BaseDirectory // Gets the base directory, which is used by the assembly conflict resolution program to detect assemblies.   
Thread.GetDomain().BaseDirectory // Get the base directory, which is used by the assembly conflict resolution program to detect assemblies.  
  Environment.CurrentDirectory // Get or set the fully qualified path to the current working directory.   
Directory.GetCurrentDirectory() // Get the current working directory of the application.   
Assembly.GetExecutingAssembly().Location // Gets the path or UNC location of the loaded file containing the manifest.

// Get the physical file system path of the root directory of the server application currently executing.
Request.PhysicalApplicationPath; // E:\solution\project\\ // Get the physical file system path corresponding to the requested URL. 
Request.PhysicalPath; // E:\Solutions\Projects\\zz\zz.aspx

// Get the virtual application root path of the ASP.NET application on the server: / / Request.ApplicationPath; // /aspnet // Get the virtual path to the application root and make it relative by using the waveform character (~) representation for the application root.
Request.AppRelativeCurrentExecutionFilePath; // ~/zz/zz.aspx // Gets the virtual path of the current request
Request.CurrentExecutionFilePath; // /aspnet/zz/zz.aspx Request.FilePath; // /aspnet/zz/zz.aspx // Gets the file name specified in the CurrentExecutionFilePath property with the extension specified in the CurrentExecutionFilePath property.
Request.CurrentExecutionFilePathExtension; // .aspx // Gets the virtual path of the current request (including attachment path information)
Request.Path; // /aspnet/zz/zz.aspx/info // Gets additional path information for the resource with the URL extension.
Request.PathInfo; // // /info // Gets information about the URL of the current request. Request.Url; // http://localhost/aspnet/zz/zz.aspx/inf?name=wk // Get the original URL of the current request Request.RawUrl; // /aspnet/zz/zz.aspx/inf?name=wk // Get information about the client's Request.UrlReferrer; // System.Uri

static void Main(string[] args)
        {
            if (args == null || args.Length < 1)
                return;
            string myPath = args[0];
            Console.WriteLine("Directory name: {0}", Path.GetDirectoryName(myPath));
            Console.WriteLine("Path extension: {0}", Path.GetExtension(myPath));
            Console.WriteLine("File name: {0}", Path.GetFileName(myPath));
            Console.WriteLine("Name without extension: {0}", Path.GetFileNameWithoutExtension(myPath));
            Console.WriteLine("Absolute full path: {0}", Path.GetFullPath(myPath));
            Console.WriteLine("Root directory: {0}", Path.GetPathRoot(myPath));
            Console.WriteLine("Path without root: {0}", Path.GetFullPath(myPath).Remove(0, 3));
            Console.ReadKey();
        }