Using c # how to find out if a folder is online or not

Question

Using C #, I would like my application to return whether the folder (with the already known path) is on the network or on my computer.

How can i do this?

Answer 1

If you are talking about a mapped network drive, you can use the DriveInfo DriveType property:

 var driveInfo = new DriveInfo("S:\"); if(driveInfo.DriveType == DriveType.Network) // do something 

Answer 2

Original answer from another SO question. Check if the path is on the network .

Use PathIsNetworkPath (pinvoke link ):

 class Program { [DllImport("shlwapi.dll")] private static extern bool PathIsNetworkPath(string pszPath); static void Main(string[] args) { Console.WriteLine(PathIsNetworkPath("i:\Backup")); } } 

Answer 3

Based on the answers of @jgauffin and @Daniel, you can try this little hack:

 private static bool IsNetwork(String path) { if (path.StartsWith(@"\\")) return true; var dir = new DirectoryInfo(path); var drive = new DriveInfo(dir.Root.ToString()); return drive.DriveType == DriveType.Network; } 

Answer 4

 var dirInfo = new DirectoryInfo(yourPath); var driveInfo = new DriveInfo(dirInfo.Root); if (driveInfo.DriveType == DriveType.Network) Console.WriteLine("Is a network drive!"); 

Answer 5

Try the following from the Shell Lightweight Utility API :

 class Class { [DllImport("shlwapi.dll")] private static extern bool PathIsNetworkPath(string Path); [STAThread] static void Main(string[] args) { string strPath = "D:\\Temp\\tmpfile.txt"; bool blnIsLocalPath = IsLocalPath(strPath); Console.WriteLine(blnIsLocalPath.ToString()); Console.ReadLine(); } private static bool IsLocalPath(string Path) { return !PathIsNetworkPath(Path); } } 

What to consider:

• Paths starting with two backslash characters (\) are interpreted as UNC (UNC) paths.
• Paths starting with a colon followed by a colon (:) are interpreted as a mapped network drive. However, PathIsNetworkPath cannot recognize a network drive mapped to a drive letter through the MS MSOS DOS SUBST command or the DefineDosDevice function.

Answer 6

You can use the following method to get the UNC path for the folder. Not exactly what you are looking for, but may be useful

  public static string GetUniversalPath(string folderPath) { if (String.IsNullOrEmpty(folderPath) || folderPath.IndexOf(":") > 1) return folderPath; if (folderPath.StartsWith("\\")) { return folderPath; } ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT RemoteName FROM win32_NetworkConnection WHERE LocalName = '" + folderPath.Substring(0, 2) + "'"); foreach (ManagementObject managementObject in searcher.Get()) { string remoteName = managementObject["RemoteName"] as String; if (!String.IsNullOrEmpty(remoteName)) { remoteName += folderPath.Substring(2); return remoteName; } } return folderPath; }