public static string GetLogDisplayName(this EventLogSession session, string logPath)
{
int capacity = 0x200, bufferUsed = 0, error = 0;
var str = logPath;
var displayName = new StringBuilder(capacity);
// Get handle
var hEvt = IntPtr.Zero;
if (SessionHandlePI == null)
{
var elhType = session?.GetType().Assembly.GetType("System.Diagnostics.Eventing.Reader.EventLogHandle");
SessionHandlePI = session?.GetType().GetProperty("Handle", BindingFlags.Instance | BindingFlags.NonPublic, null, elhType, Type.EmptyTypes, null);
}
var o = SessionHandlePI?.GetValue(session, null);
if (o != null)
{
hEvt = ((SafeHandle)o).DangerousGetHandle();
}
if (!EvtIntGetClassicLogDisplayName(hEvt, logPath, 0, 0, capacity, displayName, ref bufferUsed))
{
error = Marshal.GetLastWin32Error();
if (error == 0x7a)
{
displayName = new StringBuilder(bufferUsed);
capacity = bufferUsed;
error = 0;
if (!EvtIntGetClassicLogDisplayName(hEvt, logPath, 0, 0, capacity, displayName, ref bufferUsed))
{
throw new Win32Exception();
}
}
}
if ((error == 0) && !string.IsNullOrEmpty(displayName.ToString()))
{
str = displayName.ToString();
}
return(str);
}