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secretagent edited comment on LOG4NET-28 at 1/31/08 11:38 AM: ---------------------------------------------------------------- The PatternLayout uses SystemInfo.NullText which returns a string "(null)" not the null value. If you use a custom property and set it to null, you will not have the parameter set to DBNull. The PatternConverter.WriteObject(TextWriter writer, ILoggerRepository repository, object value) calls repository.RendererMap.FindAndRender(value, writer); which in turn, sets the value to "(null)" because the object value is null. if (obj == null) { writer.Write(SystemInfo.NullText); } else { ..... Maybe it should be if (formattedValue == null || formattedValue.ToString() == SystemInfo.NullText) { formattedValue = DBNull.Value; } was (Author: secretagent): The PatternLayout uses SystemInfo.NullText which returns a string "(null)" not the null value. If you use a custom property and set it to null, you will not have the parameter set to DBNull. The PatternConverter.WriteObject(TextWriter writer, ILoggerRepository repository, object value) calls repository.RendererMap.FindAndRender(value, writer); which in turn, sets the value to "(null)" because the object value is null. if (obj == null) { writer.Write(SystemInfo.NullText); } else { ..... > AdoNetAppender does not support inserting NULL into columns > ----------------------------------------------------------- > > Key: LOG4NET-28 > URL: https://issues.apache.org/jira/browse/LOG4NET-28 > Project: Log4net > Issue Type: Bug > Components: Appenders > Affects Versions: 1.2.9 > Reporter: Nicko Cadell > Assignee: Nicko Cadell > Priority: Minor > Fix For: 1.2.10 > > > The AdoNetAppender does not support inserting NULL values into columns. > If a column allows NULL values then the AdoNetAppender should allow NULL > values to be inserted. For most value types this means using the DBNull value > for the parameter. The AdoNetAppenderParameter should convert CLI null values > into DBNull values before setting the parameter value. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.