private static string AppendLineInfoMessage(string message, ISourceLineInfo lineInfo) { if (lineInfo != null) { string fileName = SourceLineInfo.GetFileName(lineInfo.Uri); string lineInfoMessage = CreateMessage(SR.Xml_ErrorFilePosition, fileName, lineInfo.Start.Line.ToString(CultureInfo.InvariantCulture), lineInfo.Start.Pos.ToString(CultureInfo.InvariantCulture)); if (lineInfoMessage != null && lineInfoMessage.Length > 0) { if (message.Length > 0 && !XmlCharType.Instance.IsWhiteSpace(message[message.Length - 1])) { message += " "; } message += lineInfoMessage; } } return(message); }