Map Network Drive (API)

• Download source code / example - 34 Kb

What does it do?

This is a class for interfacing with windows map network drive API's.

Introduction to the class...

• Getting started

  Add the class file "cNetworkDrives0015.cs" to your project / solution.
  Add the "using" definition to your form, etc.
  

  using aejw.Network;

• Example (Mapping a network drive)

   NetworkDrive oNetDrive = new aejw.Network.NetworkDrive();
   try{
      oNetDrive.LocalDrive = "m:";
      oNetDrive.ShareName = "\\ComputerName\Share"
      oNetDrive.MapDrive();
   }catch(Exception err){
      MessageBox.Show(this,"Error: "+err.Message);
   }
   oNetDrive = null;

• Example (Unmapping a network drive)

   NetworkDrive oNetDrive = new aejw.Network.NetworkDrive();
   try{
      oNetDrive.LocalDrive = "m:";
      oNetDrive.UnMapDrive();
   }catch(Exception err){
      MessageBox.Show(this,"Error: "+err.Message);
   }
   oNetDrive = null;

Username and Password functions...

The following examples require the object / class to be declared.

     cNetworkDrive oNetDrive = new cNetworkDrive();

• Mapping a network drive

  • //Map drive with current user credentials
    
    oNetDrive.LocalDrive = "m:";
    oNetDrive.ShareName = "\\ComputerName\Share1"
    oNetDrive.MapDrive();

  • //Map drive with specified user credentials
    
    oNetDrive.LocalDrive = "m:";
    oNetDrive.ShareName = "\\ComputerName\Share1"
    oNetDrive.MapDrive("Bob_Username","Bob_Password");

  • //Map drive with and prompt user for credentials
    
    oNetDrive.LocalDrive = "m:";
    oNetDrive.ShareName = "\\ComputerName\Share1"
    oNetDrive.PromptForCredentials = true;
    oNetDrive.MapDrive();

  • //Map drive using a persistent connection
    
    oNetDrive.LocalDrive = "m:";
    oNetDrive.Persistent = true;
    oNetDrive.SaveCredentials = true;
    oNetDrive.ShareName = "\\ComputerName\Share1"
    oNetDrive.MapDrive("Bob_Username","Bob_Password");

• Unmapping a network drive

  • //Unmap a network connection
    
    oNetDrive.LocalDrive = "m:";
    oNetDrive.ShareName = "\\ComputerName\Share1"
    oNetDrive.UnMapDrive();

  • //Unmap a network connection ignoring network related errors
    
    oNetDrive.LocalDrive = "m:";
    oNetDrive.Force = true;
    oNetDrive.ShareName = "\\ComputerName\Share1"
    oNetDrive.UnMapDrive();

• Other functions

  • //Display windows connection dialog
    
    oNetDrive.ShowConnectDialog(this);
    //Display windows disconnection dialog
    
    oNetDrive.ShowDisconnectDialog(this);

  • //Restore all persistent connections
    
    oNetDrive.RestoreDrives();

History

• 14th May 2004 - build0015
  • LocalDrive and ShareName are now properties.
  • Dialog functions now use a form object instead of a window handle.
  • Renaming scheme for public functions and properties, MapNetworkDrive(...) is now MapDrive(...), etc...
  • Added Persistant option, Used for reconnecting a drive at logon.
  • Added SaveCredentials option, Allows windows to remember the user credentials when reconnecting a persistent connection.
  • Added Force option, for MapDrive calls, if a drive is connected it will disconnect that drive then reconnect to the new share.
  • Added PromptForCredintals option, for MapDrive calls, windows will ask for a username and password to use with the connection.
  • Added RestoreDrives function that restores persistent connections.
• 30th April 2004 - build0012
  • Code refinements and tidying, added comments to the class.
• 27th April 2004 - build0011
  • Adjusted declare tags, tidied class and article
• 26th April 2004 - build0010
  • First version posted online

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Subject   Author  Date  problem using in an aspx button raziel78 1:58 2 Oct '08   Hello I have caught the CNEtworkdrive class in an web application, i use the same code that you in a aspx button but do me nothing,Do you Know what is the problem.Thanks and best Regards Sign In·View Thread·PermaLink Works on Windows XP Home? Hugo Tomas 3:51 10 Jul '08   Is this work on Windows XP Home? Hugo Tomas Sign In·View Thread·PermaLink Re: Works on Windows XP Home? aejw 15:58 20 Jul '08   Yes it should... - aejw.com Sign In·View Thread·PermaLink How do you install program chris guajardo 11:50 18 Jun '08   How you install the program? Sign In·View Thread·PermaLink Re: How do you install program [modified] aejw 12:59 19 Jun '08   This is an code sample, not an application... You could however should you wish, get Microsoft Visual Studio.net, compile the application, use NSIS or Install Shield, etc to package the application into an installer and then install it. There are applications about which are installable applications for network drives. One application even uses my code todo this, its called NetPlace (Network Place Manager) http://sourceforge.net/projects/netplace/[^]. (aejw) modified on Friday, June 20, 2008 5:39 AM Sign In·View Thread·PermaLink Multiple connections Exception NickKa 11:32 21 May '08   How do I handle the below exception when I call MapDrive? Multiple connections to a server or shared resource by the same user, using more than one user name, are not allowed. Disconnect all previous connections to the server or shared resource and try again. Sign In·View Thread·PermaLink Re: Multiple connections Exception aejw 0:38 20 Jun '08   You have the following options.... 1. Disconnect your previous connection to the resource first 2. Have your code use the same username and password as your previous connection This error comes from Windows and as far as I know, there is no way around it. (aejw) Sign In·View Thread·PermaLink Map netdriver error. [modified] Paul Zhang 17:24 16 Mar '08   Thanks to aejw's work. I usesd it in my project, but unluckly my testers found it failed to map for one time and they could not reproduce it any more. It said the user has already mapped a network dirver for the same path. What a pitty! I think maybe it will be perfect if the function WNetGetConnection is added to detect whether that network path has been mapped as a driver or not. modified on Sunday, March 16, 2008 10:37 PM Sign In·View Thread·PermaLink Re: Map netdriver error. aejw 12:52 17 Mar '08   Sorry... I have been meaning to update this code (when i get the time) from my site (http://www.aejw.com/) where there is a later version posted. Should it not fix the issue with the later version, it sounds like a logic fault from the calling application... You should read back if the drive is in use or try using "try{ }catch{ }". (aejw) Sign In·View Thread·PermaLink 3.50/5 (2 votes) Re: http webdrive (webdav) possible ? Matterz 2:09 11 Nov '07   This would be really great ! I'm looking forward to it. Will this also be done on version on your site VB and C# ? If help is needs, just yell Sign In·View Thread·PermaLink Re: http webdrive (webdav) possible ? aejw 6:40 11 Nov '07   No problem , yes the new version will come in two flavors / articles... c# and vb.net, Each will cross link to show how c# vs vb.net API writing is compared... and thanks, any testing will be a great aid... (aejw) Sign In·View Thread·PermaLink 5.00/5 (1 vote) Re: http webdrive (webdav) possible ? Matterz 18:31 26 Jan '08   Hi, I still have your email and did not respond on it yet, I'm very sorry for that. You said you already have a good ammount of code for the webdav part. How far are you at the moment ? I'm very exited about it ! Thanks. Sign In·View Thread·PermaLink http webdrive (webdav) possible ? Matterz 12:04 10 Nov '07   I'm not able to map a http(s) drive yet, the rest works fine on the C# version from your site. What happen is that I get the following: Cannot map drive !! Err Msg: No Network Provider Accepted the Given Network Path OK, using net use on the commandline I get an 67 error, but I think this has nothing to do with it ? Sign In·View Thread·PermaLink 2.00/5 (1 vote) Re: http webdrive (webdav) possible ? aejw 18:54 10 Nov '07   Off the top of my head connecting a web drive needs an alternate set of API commands to be used... I am updating the class and article soon (next week or so). I will look into including this functin. (aejw) Sign In·View Thread·PermaLink 5.00/5 (1 vote) Unmapping Error Sturges 6:12 9 Nov '07   Hey, Great code, truly was a big help for me. Just a quick question, I'm using this code in my windows service and when my service returned an error saying the file I was trying to read was already in use by another process, I stopped my service and tried again an hour later. When I restarted the service I got the following error: "The local device name is already in use." So I tried to Unmap the drive but it return this error: "This network connection does not exist" I was wondering if there is a work around for is... Also the drive letter only does not work with your code, I have been able to suucessfully map to that drive letter through NetUse, and window's map network drive without issues. Sign In·View Thread·PermaLink Re: Unmapping Error aejw 19:00 10 Nov '07   Ok the lastest version of my class is on my site, aejw.com... This version is a little out of date, I am updating it in the next week or so. Thanks for reporting any bugs, I will do my best to sort them all out. As for your service, it sounds like another application is maybe accessing / using a driveless "use" connection??? im not so sure. Try unmapping the share, using null as the drive value. Please keep me posted, I really should also look into writing a demo service application (there are some ways of re-routing a service to load under a local user account). (aejw) Sign In·View Thread·PermaLink Re: Unmapping Error Sturges 9:19 13 Nov '07   Hi, I am actually using your newest verison of this code, from your website. Also, I tried unmapping using null as the drive value, but I still got the same error. I then followed through the drive letters effected and found no other programs accessing set drive letters, or a program using a driveless connection. So, I tried using the force command on the mapping function in hopes it would go through but had no such luck. Thanks for the response, I guess I'll just use a different drive letter, I mean its not that big of a problem for me cause the drive letters are still able to map using windows mapping. oh one more question, is there a way of using this code to connect to the next open drive letter (say drives A:,B:,C:, and D: are in use, it than uses E:, much like the * in a Net use cmdline), if yes is there a way remembering that drive letter so it could be placed in a server log message Andrew Sign In·View Thread·PermaLink Thank you MaYo69 3:36 28 Sep '07   Thank you, Thank you, Thank you!!! I've been searching for a way to get my service to read from a mapped drive for a few days now!! This is exactly what I needed!! Sign In·View Thread·PermaLink UnMapDrive [modified] Daniel B. 6:55 18 Jun '07   Unmapping a network drive that is not bind to a local drive will fail whereas the class allows the mapping of a network drive without assigning it to a local drive. To make it work, update the zUnMapDrive() : int i; if (ls_Drive != "")     i = WNetCancelConnection2A(ls_Drive, iFlags, Convert.ToInt32(pfForce)); else     i = WNetCancelConnection2A(ls_ShareName, iFlags, Convert.ToInt32(pfForce)); A new version of this class that already has the fix and more features can be found here[^] - Daniel B. -- modified at 12:01 Monday 18th June, 2007 Sign In·View Thread·PermaLink Re: UnMapDrive aejw 19:36 20 Jun '07   I'm sorry I really should update this article... I will get it done soon. ---------------------------- http://www.aejw.com/ Sign In·View Thread·PermaLink Thanks spockxx1 6:44 13 Dec '06   I have to Thank you a lot. Sign In·View Thread·PermaLink For Update.... Sixcode 3:47 29 Oct '06   For an update for this project visit http://www.aejw.com/[^] Btw.. you got my 5 keep up the good work Sign In·View Thread·PermaLink Working with VB.NET [modified] dietercools 13:58 10 Sep '06   If you want to write an application in VB.NET you get errors that the namespace cannot be found. Adding a reference to networkdrive.dll does not work. I compiled the class to a new DLL which can be referenced to in VB.NET projects. Enjoy it! http://rapidshare.com/files/7669042/NetWorkDrive.dll.html (will be deleted by rapidshare if not downloaded for 45 days) Sign In·View Thread·PermaLink 1.50/5 (3 votes) Reconnect Drives FeLiZk 1:14 19 Aug '06   The DllImport of WNetRestoreConnectionW needs to specify CharSet = CharSet.Unicode to be used to reconnect single drives. Useful because DriveInfo, FileInfo and DirectoryInfo does not reconnect drives when accessing them like explorer does. [DllImport("mpr.dll", CharSet = CharSet.Unicode)] public static extern int WNetRestoreConnectionW(IntPtr phWnd, string psLocalDrive); Works for reconnecting net drives like so: int i = WNetRestoreConnectionW(IntPtr.Zero, "z:"); Hope it helps someone Sign In·View Thread·PermaLink Re: Reconnect Drives aejw 22:13 20 Aug '06   ta mate... will sent code project an update soon with that in it... ---------------------------- http://www.aejw.com/ Sign In·View Thread·PermaLink

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