internal static string GetDetailedExceptionMessage(this Exception ex, bool forUser)
{
// Must handle EVException separately otherwise its ToString would call us again and cause infinite recursion
if (ex is EVException)
{
return(String.Empty);
}
if (forUser)
{
// Suppress default message CLR produces if no message is specified in exception
string realMessage = MessageFieldInfo.GetValue(ex) as string;
if (String.IsNullOrWhiteSpace(realMessage))
{
return(String.Empty);
}
}
// Debugging
//FieldInfo[] exceptionFields = typeof(Exception).GetFields(BindingFlags.NonPublic | BindingFlags.Instance);
// Save InnerException so we can restore it back
Exception innerException = ex.InnerException;
// Reset InnerException so that ToString() would not go recursive
InnerExceptionFieldInfo.SetValue(ex, null);
// Save StackTraceString so we can restore it back
object strStackTraceString = StackTraceStringFieldInfo.GetValue(ex);
// Reset strStackTraceString to empty string so that it would not show up in ToString() output
StackTraceStringFieldInfo.SetValue(ex, String.Empty);
// Getting single level (non-recursive) ToString() without StackTrace
string detailedExceptionMessage = ex.ToString();
if (forUser)
{
// End users are not interested to see the type of exception being thrown. Unfortunately most system exceptions tend to
// prepend it in their implementation of ToString() overload.
string typePrefix = ex.GetType().FullName + ": ";
detailedExceptionMessage = Utils.RemovePrefix(detailedExceptionMessage, typePrefix);
}
detailedExceptionMessage = Utils.RemoveSuffix(detailedExceptionMessage, "\r\n");
IOException ioEx = ex as IOException;
if (ioEx != null && !ex.GetOrCreatePayload().ContainsProperty(FileNameLabel))
{
object objFileName = MaybeFullPathFieldInfo.GetValue(ioEx);
string fileName = objFileName == null ? "Unknown" : objFileName.ToString();
ex.AddNamedProperty(FileNameLabel, fileName);
}
// Restoring InnerException and StackTrace back to their original values
InnerExceptionFieldInfo.SetValue(ex, innerException);
StackTraceStringFieldInfo.SetValue(ex, strStackTraceString);
return(detailedExceptionMessage);
}