mvdriel
asked on
Copying from a network share
Hi Guys,
I'm looking for a way to copy files on a network share to a local folder. I'm now doing this via a mapped network connection, but as this sometimes times out I would like to do this in the software.
I've come across this piece of code:
Which is then used by a call like this (simplified):
This solution works great.... as long as now File Explorer windows are opened. As soon as an Explorer window is opened, authentication fails (even if the Explorer window hasn't even touched the remote PC).
Question: Is there a better way to do this (preferably) or is there a way to close all Explorer windows (without killing off the main Explorer.exe process)
Thanks!
I'm looking for a way to copy files on a network share to a local folder. I'm now doing this via a mapped network connection, but as this sometimes times out I would like to do this in the software.
I've come across this piece of code:
Imports System.Runtime.InteropServices
Imports System.Net
Imports System.ComponentModel
Public Class NetworkConnection
Implements IDisposable
Private _networkName As String
Public Sub New(networkName As String, credentials As NetworkCredential)
_networkName = networkName
Dim ntResource = New NetResource() With { _
.Scope = ResourceScope.GlobalNetwork, _
.ResourceType = ResourceType.Disk, _
.DisplayType = ResourceDisplaytype.Share, _
.RemoteName = networkName _
}
Dim userName = If(String.IsNullOrEmpty(credentials.Domain), credentials.UserName, String.Format("{0}\{1}", credentials.Domain, credentials.UserName))
Dim result = WNetAddConnection2(ntResource, credentials.Password, userName, 0)
If result <> 0 Then
Throw New Win32Exception(result, "Error connecting to remote share")
End If
End Sub
Public Sub Dispose() Implements IDisposable.Dispose
Dispose(True)
GC.SuppressFinalize(Me)
End Sub
Protected Overrides Sub Finalize()
Try
Dispose(False)
Finally
MyBase.Finalize()
End Try
End Sub
Protected Overridable Sub Dispose(disposing As Boolean)
WNetCancelConnection2(_networkName, 0, True)
End Sub
<DllImport("mpr.dll")> _
Private Shared Function WNetAddConnection2(netResource As NetResource, password As String, username As String, flags As Integer) As Integer
End Function
<DllImport("mpr.dll")> _
Private Shared Function WNetCancelConnection2(name As String, flags As Integer, force As Boolean) As Integer
End Function
End Class
<StructLayout(LayoutKind.Sequential)> _
Public Class NetResource
Public Scope As ResourceScope
Public ResourceType As ResourceType
Public DisplayType As ResourceDisplaytype
Public Usage As Integer
Public LocalName As String
Public RemoteName As String
Public Comment As String
Public Provider As String
End Class
Public Enum ResourceScope As Integer
Connected = 1
GlobalNetwork
Remembered
Recent
Context
End Enum
Public Enum ResourceType As Integer
Any = 0
Disk = 1
Print = 2
Reserved = 8
End Enum
Public Enum ResourceDisplaytype As Integer
Generic = &H0
Domain = &H1
Server = &H2
Share = &H3
File = &H4
Group = &H5
Network = &H6
Root = &H7
Shareadmin = &H8
Directory = &H9
Tree = &HA
Ndscontainer = &HB
End Enum
Which is then used by a call like this (simplified):
Dim cred As Net.NetworkCredential
cred = New Net.NetworkCredential(*User*, *Pass)
Try
Using (New NetworkConnection(String.Format("\\{0}", *NetworkIP*), cred))
IO.File.Copy(*RemoteFile*, *LocalFile*, true)
End Using
Catch ex as exception
*Error handling*
End try
This solution works great.... as long as now File Explorer windows are opened. As soon as an Explorer window is opened, authentication fails (even if the Explorer window hasn't even touched the remote PC).
Question: Is there a better way to do this (preferably) or is there a way to close all Explorer windows (without killing off the main Explorer.exe process)
Thanks!
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@OP, experts and future visitors:
Please remember to endorse my, or any other expert's comments that you found helpful by clicking on the "Thumb's Up" button
Read more on endorsements
https://www.experts-exchange.com/discussions/218503/What-are-Endorsements.html
ASKER