要映射一个网络目录为本地驱动器，需要调用系统DLL的WNetAddConnection2函数来进行添加。

首先，系统函数的申明如下：

using System.Runtime.InteropServices;

[DllImport("mpr.dll", EntryPoint="WNetAddConnection2")]

public static extern uint WNetAddConnection2(

[In] NETRESOURCE lpNetResource,

string lpPassword,

string lpUsername,

uint dwFlags);

[DllImport("Mpr.dll")]

public static extern uint WNetCancelConnection2(

string lpName,

uint dwFlags,

bool fForce);

[StructLayout(LayoutKind.Sequential)]

public class NETRESOURCE

{

public int dwScope;

public int dwType;

public int dwDisplayType;

public int dwUsage;

public string LocalName;

public string RemoteName;

public string Comment;

public string Provider;

}

添加映射网络驱动器调用的代码如下：

NETRESOURCE myNetResource = new NETRESOURCE();

myNetResource.dwScope = 2; //2:RESOURCE_GLOBALNET

myNetResource.dwType = 1 ; //1:RESOURCETYPE_ANY

myNetResource.dwDisplayType = 3; //3:RESOURCEDISPLAYTYPE_GENERIC

myNetResource.dwUsage = 1; //1: RESOURCEUSAGE_CONNECTABLE

myNetResource.LocalName = "T:";

myNetResource.RemoteName = yourNetworkPath;

myNetResource.Provider = null;

uint nret = WNetAddConnection2( myNetResource, pwd, username, 0);

注意：如果正确，返回值是0；否则错误。

删除映射网络驱动器调用的代码如下：

uint nret = WNetCancelConnection2( yourNetDriveName, 1, true);