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【CSharp】取得当前系统所有用户名

作者:Dezai.CN / 发布于2011/6/27/ 836

<div>using System;
using System.Text;
//
using System.Runtime.InteropServices;

namespace ConsoleTest
{
class Program
{
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct USER_INFO_0
{
public string Username;
}

[DllImport("Netapi32.dll ")]
extern static int NetUserEnum(
[MarshalAs(UnmanagedType.LPWStr)] 
string servername,
int level,
int filter,
out IntPtr bufptr,
int prefmaxlen,
out int entriesread,
out int totalentries,
out int resume_handle);

[DllImport("Netapi32.dll ")]
extern static int NetApiBufferFree(IntPtr Buffer);

static void Main(string[] args)
{
StringBuilder sb = new StringBuilder();

int EntriesRead;
int TotalEntries;
int Resume;
IntPtr bufPtr;

NetUserEnum(null, 0, 2, out bufPtr, -1, out EntriesRead,
out TotalEntries, out Resume);
if (EntriesRead > 0)
{
USER_INFO_0[] Users = new USER_INFO_0[EntriesRead];
IntPtr iter = bufPtr;
for (int i = 0; i < EntriesRead; i++)
{
Users[i] = (USER_INFO_0)Marshal.PtrToStructure(iter,
typeof(USER_INFO_0));
iter = (IntPtr)((int)iter + Marshal.SizeOf(typeof(USER_INFO_0)));
sb.AppendLine(Users[i].Username);
}
NetApiBufferFree(bufPtr);
//输出
Console.WriteLine(sb.ToString());
}
Console.ReadKey();
}
}
}
</div>

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