internal static extern int StartTrace(
[Out]
out ulong sessionHandle,
[In, MarshalAs(UnmanagedType.LPWStr)]
string sessionName,
[In, Out]
ref EventTraceProperties eventTraceProperties);
protected override bool ReleaseHandle()
{
EventTraceProperties properties = new EventTraceProperties(true /*initialize*/);
return NativeMethods.StopTrace(this.sessionHandle, this.loggerName, out properties /*as statistics*/) != 0;
}
private bool LoadExistingEventTraceProperties()
{
const int ERROR_WMI_INSTANCE_NOT_FOUND = 4201;
this.eventTraceProperties = new EventTraceProperties(true);
int status = NativeMethods.QueryTrace(0, this.loggerName, ref this.eventTraceProperties);
if (status == 0) {
return true;
}
else if (status == ERROR_WMI_INSTANCE_NOT_FOUND) {
// The instance name passed was not recognized as valid by a WMI data provider.
return false;
}
throw new System.ComponentModel.Win32Exception(status);
}