This will check if user is in the local Administrators group (assuming you’re not checking for domain admin permissions)
using System.Security.Principal;
public bool IsUserAdministrator()
{
//bool value to hold our return value
bool isAdmin;
WindowsIdentity user = null;
try
{
//get the currently logged in user
user = WindowsIdentity.GetCurrent();
WindowsPrincipal principal = new WindowsPrincipal(user);
isAdmin = principal.IsInRole(WindowsBuiltInRole.Administrator);
}
catch (UnauthorizedAccessException ex)
{
isAdmin = false;
}
catch (Exception ex)
{
isAdmin = false;
}
finally
{
if (user != null)
user.Dispose();
}
return isAdmin;
}