public static PdhCounter AddCounter(this PdhQueryHandle query, string category, string counter, string instance, bool throwOnError)
{
var path = instance == null
? CounterPathFactory.Create(category, counter)
: CounterPathFactory.Create(category, counter, instance);
var status = PdhExports.PdhAddEnglishCounter(query, path, IntPtr.Zero, out var pdhCounter);
if (status == PdhStatus.PDH_CSTATUS_VALID_DATA)
{
return(pdhCounter);
}
if (!throwOnError)
{
return(default);
public static extern PdhStatus PdhCollectQueryData(PdhQueryHandle query);
public static extern PdhStatus PdhAddEnglishCounter(
PdhQueryHandle query,
string path,
IntPtr userData,
out PdhCounter counter);
public static extern PdhStatus PdhOpenQuery(string dataSource, IntPtr userData, out PdhQueryHandle query);
public static PdhStatus CollectQueryData(this PdhQueryHandle query) => PdhExports.PdhCollectQueryData(query);