Lakshmi created LOG4NET-357: ------------------------------- Summary: Object Reference issue in changing the Log file name dynamically in threads Key: LOG4NET-357 URL: https://issues.apache.org/jira/browse/LOG4NET-357 Project: Log4net Issue Type: Bug Reporter: Lakshmi
Hai Am creating a web application using Vb.Net for data processing. I am implementing multi threading in processing functions. And also i used log4net to log the function calls and steps. My application requires multiple log file. So i used the following code to change the log files dynamically. ''' <summary> ''' Function used to set the name for Log File ''' </summary> ''' <param name="Jobid"></param> ''' <param name="jobtype"></param> ''' <remarks></remarks> Public Shared Sub SetLogFileName(ByVal Jobid As String, ByVal jobtype As String) Try Dim logFileName As String If (Jobid = 0) Then logFileName = HttpContext.Current.Server.MapPath("~/Log/Setup_Log.txt") Else logFileName = HttpContext.Current.Server.MapPath("~/Log/Job_" & jobtype & "_" & Jobid & ".txt") End If ChangeLogFileName("LogFileAppender", logFileName) Catch ex As Exception Throw ex End Try End Sub ''' <summary> ''' Function used to change the Log File Name ''' </summary> ''' <param name="AppenderName"></param> ''' <param name="NewFilename">New name for the file</param> ''' <returns>Returns a Bool Value</returns> ''' Public Shared Function ChangeLogFileName(ByVal AppenderName As String, ByVal NewFilename As String) As Boolean Try XmlConfigurator.Configure() Dim config As System.Configuration.Configuration = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("~/") Dim RootRep As log4net.Repository.ILoggerRepository RootRep = log4net.LogManager.GetRepository() For Each iApp As log4net.Appender.IAppender In RootRep.GetAppenders() If iApp.Name.CompareTo(AppenderName) = 0 AndAlso TypeOf iApp Is log4net.Appender.RollingFileAppender Then Dim fApp As log4net.Appender.RollingFileAppender = DirectCast(iApp, log4net.Appender.RollingFileAppender) fApp.File = NewFilename fApp.ActivateOptions() ' Appender found and name changed to NewFilename Return True End If Next ' appender not found Return False Catch ex As Exception Throw ex End Try End Function Whan am trying to change the log files in side thread it shows object reference issue in following line clsLoggerCheck.SetLogFileName(JobID, "Analysis") what is the reson for object reference? how can I solve this issue? Thanks -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira