Монтирую как диск расшаренную папку на удалённом компьютере так:
- Код: Выделить всё
Public Declare Function WNetAddConnection2 Lib "mpr.dll" Alias "WNetAddConnection2A" _
( ByRef lpNetResource As NETRESOURCE, ByVal lpPassword As String, _
ByVal lpUserName As String, ByVal dwFlags As Integer) As Integer
Public Declare Function WNetCancelConnection2 Lib "mpr" Alias "WNetCancelConnection2A" _
(ByVal lpName As String, ByVal dwFlags As Integer, ByVal fForce As Integer) As Integer
<StructLayout(LayoutKind.Sequential)> _
Public Structure NETRESOURCE
Public dwScope As Integer
Public dwType As Integer
Public dwDisplayType As Integer
Public dwUsage As Integer
Public lpLocalName As String
Public lpRemoteName As String
Public lpComment As String
Public lpProvider As String
End Structure
Public Const ForceDisconnect As Integer = 1
Public Const RESOURCETYPE_DISK As Long = &H1
Public Function MapDrive(ByVal DriveLetter As String, ByVal UNCPath As String) As Boolean
Dim nr As NETRESOURCE
Dim strUsername As String
Dim strPassword As String
nr = New NETRESOURCE
nr.lpRemoteName = UNCPath
nr.lpLocalName = DriveLetter & ":"
strUsername = Nothing '(add parameters to pass this if necessary)
strPassword = Nothing '(add parameters to pass this if necessary)
nr.dwType = RESOURCETYPE_DISK
Dim result As Integer
result = WNetAddConnection2(nr, strPassword, strUsername, 0)
If result = 0 Then
Return True
Else
Return False
End If
End Function
Public Function UnMapDrive(ByVal DriveLetter As String) As Boolean
Dim rc As Integer
rc = WNetCancelConnection2(DriveLetter & ":", 0, ForceDisconnect)
If rc = 0 Then
Return True
Else
Return False
End If
End Function
Далее копирую так:
- Код: Выделить всё
My.Computer.FileSystem.CopyDirectory(ASourceName, ADestName, FileIO.UIOption.AllDialogs)
'ASourceName = "D:\MyBackups": ADestName = "F:\" (сетевой диск)
Копируется, но очень медленно. А если копировать в проводнике из локальной папки на тот же сетевой диск, то получается на порядок быстрее.
Почему так происходит?