using System.Security.Principal;
 
bool isElevated;
using (WindowsIdentity identity = WindowsIdentity.GetCurrent())
{
  WindowsPrincipal principal = new WindowsPrincipal(identity);
  isElevated = principal.IsInRole(WindowsBuiltInRole.Administrator);
}

C# administrator privilege - checking Archive du 10/05/2011 le 29/04/2020