/// <summary>
/// 判断当前操作用户的管理角色
/// </summary>
public static void GetCurrentUserRole()
{
  AppDomain appDomain = System.Threading.Thread.GetDomain();
  appDomain.SetPrincipalPolicy(System.Security.Principal.PrincipalPolicy.WindowsPrincipal);
  System.Security.Principal.WindowsPrincipal wp = System.Threading.Thread.CurrentPrincipal as System.Security.Principal.WindowsPrincipal;
  bool IsUser = wp.IsInRole(System.Security.Principal.WindowsBuiltInRole.Guest);
  Console.Write("当前用户的角色是：");
  if (IsUser)
    Console.WriteLine("来宾");
  IsUser = wp.IsInRole(System.Security.Principal.WindowsBuiltInRole.User);
  if (IsUser)
    Console.WriteLine("普通用户");
  IsUser = wp.IsInRole(System.Security.Principal.WindowsBuiltInRole.PowerUser);
  if (IsUser)
    Console.WriteLine("超级用户");
  IsUser = wp.IsInRole(System.Security.Principal.WindowsBuiltInRole.Administrator);
  if (IsUser)
    Console.WriteLine("系统管理员");
  IsUser = wp.IsInRole(System.Security.Principal.WindowsBuiltInRole.SystemOperator);
  if (IsUser)
    Console.WriteLine("系统操作员");
  IsUser = wp.IsInRole(System.Security.Principal.WindowsBuiltInRole.BackupOperator);
  if (IsUser)
    Console.WriteLine("备份操作员");
  IsUser = wp.IsInRole(System.Security.Principal.WindowsBuiltInRole.PrintOperator);
  if (IsUser)
    Console.WriteLine("打印操作员");
  IsUser = wp.IsInRole(System.Security.Principal.WindowsBuiltInRole.AccountOperator);
  if (IsUser)
    Console.WriteLine("账户操作员");
  IsUser = wp.IsInRole(System.Security.Principal.WindowsBuiltInRole.Replicator);
  if (IsUser)
    Console.WriteLine("复制程序员");
}