troubleshooting Question

Null Values in Datatable - VB.Net

Avatar of JesNoFear
JesNoFearFlag for United States of America asked on
.NET ProgrammingVisual Basic.NET
3 Comments1 Solution233 ViewsLast Modified:
Hello everyone,
So I am getting a weird anomaly while using a datatable in vb.net. Every so often I get nulls in my datatable where they do not exist in SQL. I know "how" to compensate for them, but that isn't my issue, they should not be there, and it just makes the integrity of results bad..

I am using the following code to populate the table
            Try
                Using Processing_LoadData As New SqlDataAdapter("SELECT [TrackingID],[SAMAccountName],[DisplayName],[givenName],[middleName],[sn],[employeeNumber],[employeeID],[EmployeeType],[Personal_Phone],[Personal_EMail],[roomNumber],[accountExpires],[Creator],[Location_Friendly],[LocationID],[Building_DN],[Address1],[Address2],[City],[State],[Zip],[Description],[Office],[Department],[Company],[ProfilePath],[HomePath],[HomeDrive],[Record_Source],[INSERT_TIME],[MailTO],[Auto_Expiration_Enable],[Auto_Expiration_Int],[Auto_Expiration_Peroid],[IP],[Justification],[141],[ADDN],[Mail],[Live_Object_Source] FROM [AMSv1].[dbo].[AMS_Processing_INPROGRESS_ADWrite];", Processing_SQLConnection)
                    Try
                        Processing_DataResults = New DataTable
                        Processing_LoadData.Fill(Processing_DataResults)
                    Catch ex As Exception
                        WinEventLog.WriteEntry("Account Processing: Failed to populate datatable. " & ex.ToString, EventLogEntryType.Warning, 1503)
                        GoTo Processing_Exit
                    End Try
                End Using
            Catch ex As Exception
                WinEventLog.WriteEntry("Account Processing: Failed to bind to SQL", EventLogEntryType.Warning, 1502)
                GoTo Processing_Exit
            End Try

Reason I am using a database instead of direct SQL reads is because I am spinning up multiple threads to process the changes in parallel. and using a datatable you can easily divide up the load.

executing the same statement in sql, I have no nulls.

Has anyone else had this problem / seen this?
I am not going to lie, it is a LOT of data, 40 columns and between 9,000 to 150,000 rows.
ASKER CERTIFIED SOLUTION
Trideep Patel
Project Lead

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