C#

using System.IO;

string myPath = @"C:\Windows";
if (Directory.Exists(myPath))
{
   // do something
}

John Simmons / outlaw programmer wrote:

I don't understand. You mean the string itself might be empty/null?

// These will throw exceptions.
DirectoryInfo di = new DirectoryInfo("***");
FileInfo fi = new FileInfo("***");

Directory.CreateDirectory(path);
Directory.RemoveDirectory(path);

Saksida Bojan wrote:

if imputed string is valid before creating

Saksida Bojan wrote:

Is there any better check to check if a path inside string is valid?

C:\Windows\MyBla:Folder

I are Troll

Directory.CreateDirectory(path);
Directory.RemoveDirectory(path);

Eddy Vluggen wrote:

In order to verify whether "MyBla:Folder" is a valid name?

public static bool IsValidPath(String path)
  {
      DirectoryInfo di;

      // Atempt to put String path into DirectoryInfo
      try
      {
          di = new DirectoryInfo(path);
      }
      catch (NotSupportedException) { return false; }

      // It must be logical drive. (HDD, SSD or USB Mass Storage)
      bool foundLogicalDrive = false;
      foreach (String str in Directory.GetLogicalDrives())
      {
          if (path.Substring(0, 3).ToUpper() == str)
              foundLogicalDrive = true;
      }

      if (!foundLogicalDrive)
          return false;

      return IsValidPathParser(di);

  }

  private static bool IsValidPathParser(DirectoryInfo di)
  {
      if (di.Exists)
      {
          // ACL checks here
          return true;
      }
      else
      {
          if (di.Name.ToUpper() != di.Root.Name.ToUpper())
              return IsValidPathParser(di.Parent);
          else
              return false;
      }
  }