c# - 检查本地组是否已存在的优雅方法

Question

有没有办法查明本地组是否已经存在？我的“最佳”解决方案通过捕获异常来工作。有没有办法在不捕获异常的情况下实现相同的目标？

var machine = Environment.MachineName;
var server = new DirectoryEntry(string.Format("WinNT://{0},Computer", machine));
bool groupExists = true;
try
{
   server.Children.Find("MyGroup", "group");
}
catch (COMException ex)
{
   if (ex.ErrorCode == -2147022676)
      groupExists = false;
   else
      throw;
}

Answer 1

你可以试试下面的代码

        var machine = Environment.MachineName;
        var server = new DirectoryEntry(string.Format("WinNT://{0},Computer", machine));
        bool exists = server.Children.Cast<DirectoryEntry>().Any(d => d.SchemaClassName.Equals("Group") && d.Name.Equals("Administrators"));