System.CodeDom.Compiler.CompilerError.ToString C# (CSharp) Method

        public override string ToString() {
            if (FileName.Length > 0) {
                return string.Format(CultureInfo.InvariantCulture, "{0}({1},{2}) : {3} {4}: {5}",
                                     new object[] {
                                        FileName,
                                        Line,
                                        Column,
                                        IsWarning ? "warning" : "error",
                                        ErrorNumber,
                                        ErrorText});
            }
            else
                return string.Format(CultureInfo.InvariantCulture, "{0} {1}: {2}",                                         
                                        IsWarning ? "warning" : "error",
                                        ErrorNumber,
                                        ErrorText);
        }
    }

        private static void AppendError(StringBuilder message, CompilerError error, string[] lines)
        {
            message.AppendLine( error.ToString() );

            if (error.Line <= 0)
            {
                return;
            }

            var line = error.Line - 1;

            if( line - 1 > 0 )
            {
                message.AppendLine( string.Format("{0}: {1}", (line - 1).ToString( "0000", CultureInfo.CurrentUICulture ), lines[line - 1]) );
            }

            message.AppendLine( string.Format("{0}: {1}", (line - 1).ToString( "0000", CultureInfo.CurrentUICulture ), lines[line]) );

            if( line + 1 < lines.Length )
            {
                message.AppendLine( string.Format("{0}: {1}", (line + 1).ToString( "0000", CultureInfo.CurrentUICulture ), lines[line + 1]) );
            }

            message.AppendLine();
        }