You can also use the WNetAddConnection2 and WNetAddConnection3 functions to redirect a local device to a network resource. Connections added by NetUseAdd are not shown in the Explorer. You should use one of the WNetAddConnection methods to make the networkdrive visible in the explorer.

private static extern int WNetAddConnection2( NETRESOURCE lpNetResource,

int result = WNetAddConnection2(nr, password, user, (int)ResourceConnection.CONNECT_TEMPORARY);

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wnet/wnet/wnetaddconnection2.asp

The WNetAddConnection2 function supersedes the WNetAddConnection function. If you can pass a handle to a window that the provider of network resources can use as an owner window for dialog boxes, call the WNetAddConnection3 function instead.

public static extern int WNetAddConnection2(ref NETRESOURCE netResource,

public static extern int WNetAddConnection2(NETRESOURCE netResource,

  //    [DllImport("Mpr.dll", EntryPoint="WNetAddConnection2", CallingConvention=CallingConvention.Winapi)]

  //      private static extern ErrorCodes WNetAddConnection2(NETRESOURCE lpNetResource,ref string lpPassword,ref

public static extern int WNetAddConnection2( [In] NETRESOURCE netResource,

Declare Function WNetAddConnection2 Lib "mpr.dll" (ByRef netResource As _

Declare Function WNetAddConnection2 Lib "mpr.dll" (netResource As _

// int ret = WNetAddConnection2( myNetResource, "username", "password", 0);

int ret = WNetAddConnection2( myNetResource, "password", "username", 0); //by honglinlee

    var result = WNetAddConnection2(

    private static extern int WNetAddConnection2(NetResource netResource,

    private static extern int WNetAddConnection2(NETRESOURCE lpNetResource, string lpPassword, string lpUsername, int dwFlags);

        int result = WNetAddConnection2(myNetResource, password, user, 0);

    returnValue = WNetAddConnection2(myResource, password, username, 0)

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wnet/wnet/wnetaddconnection2.asp

Without the Structlayout the WNetAddConnection2 does not work !!!