C# 检查当前程序是否有管理员权限

参考：C# administrator privilege - checking

using System.Security.Principal;
bool isElevated;
using (WindowsIdentity identity = WindowsIdentity.GetCurrent())
{
    WindowsPrincipal principal = new WindowsPrincipal(identity);
    isElevated = principal.IsInRole(WindowsBuiltInRole.Administrator);
}
// 简短版
static bool IsElevated => new WindowsPrincipal(WindowsIdentity.GetCurrent()).IsInRole(WindowsBuiltInRole.Administrator);