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Sorting a dataset
Message
From
18/07/2013 11:30:35
 
 
General information
Forum:
ASP.NET
Category:
Other
Environment versions
Environment:
VB 9.0
OS:
Windows 7
Network:
Windows 2003 Server
Database:
MS SQL Server
Application:
Web
Miscellaneous
Thread ID:
01578641
Message ID:
01578771
Views:
41
>Shouldn't this:
>   ' Sort the dataset into the primary key
>                oData.oDataView.Sort = "AI"
> 
>                ' For each record
>                For lnCounter = 0 To oData.nCount - 1
>                    loRow = oData.oRows(lnCounter)
>                Next
be:
oData.oDataView.Sort = "AI"
> 
>                ' For each record
>                For lnCounter = 0 To oData.oDataView.Count - 1
>                    loRow = oData.oDataView.Item(lnCounter)
>                Next
(Haven't checked the exact syntax). Once again: you are looping through the table in the first case - the DataView may as well not exist.

The Data class always exposes the oDataView once a SQL select has been done.

The oData.nCount is the same as oData.oDataView.Count as this is also initialized from the Data class once a SQL select command is executed.

Now, as far as scanning the rows and assigning them to loRow, oRows is initialized like this at the Data class level:
                ' If we have no record
                If nCount = 0 Then
                    oRows = Nothing
                Else
                    oDataView = oDataSet.Tables("Temp").DefaultView
                    oRows = oDataSet.Tables("Temp").Rows()
                End If
So, the way oRows is initialized here, is it the same thing as oData.oDataView.Item?
Michel Fournier
Level Extreme Inc.
Designer, architect, owner of the Level Extreme Platform
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