Get UNC Path for Mapped Drive VB.net

Question

I neet to get UNC path from mapped drive. I tried to use WNetGetConnection, but it doesn't work for me. It returns error 487. Does anybody know how to deal with this error or any other way to get the UNC path?

Solution 1

Totally go with @Alex K's P/Invoke suggestion, I just wanted to post a hack method of piping through the net use command:

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    Dim RemotePath = GetUncSourcePath("v"c)
    If String.IsNullOrEmpty(RemotePath) Then
        Trace.WriteLine("there was an error")
    Else
        Trace.WriteLine(RemotePath)
    End If
    Me.Close()
End Sub
Private Shared Function GetUncSourcePath(ByVal driveLetter As Char) As String
    If String.IsNullOrEmpty(driveLetter) Then Throw New ArgumentNullException("driveLetter")
    If (driveLetter < "a"c OrElse driveLetter > "z") AndAlso (driveLetter < "A"c OrElse driveLetter > "Z") Then Throw New ArgumentOutOfRangeException("driveLetter", "driveLetter must be a letter from A to Z")
    Dim P As New Process()
    With P.StartInfo
        .FileName = "net"
        .Arguments = String.Format("use {0}:", driveLetter)
        .UseShellExecute = False
        .RedirectStandardOutput = True
        .CreateNoWindow = True
    End With
    P.Start()
    Dim T = P.StandardOutput.ReadToEnd()
    P.WaitForExit()
    For Each Line In Split(T, vbNewLine)
        If Line.StartsWith("Remote name") Then Return Line.Replace("Remote name", "").Trim()
    Next
    Return Nothing
End Function

Solution 2

You can use the WNetGetUniversalName API.