Solved

Check if DataAdapter holds rows

Posted on 2009-04-02
4
461 Views
Last Modified: 2012-06-21
Hi EE,

I am trying to figure out how to tell if a dataadapter has rows.  I know how to do it with a datareader, but haven't been able to figure out how with a dataadapter.
Please provide an example.  Clicking on links crash my IE.
Below is the code I use to fill the dataadapter.
Thanks
Dim ds As New DataSet
 
        If DatabaseToUse() = BizObjs.DBType.Access Then
            'Access Database
 
 
            Dim dc As New OleDb.OleDbConnection(ConnectionString)
            Dim da As New OleDb.OleDbDataAdapter(SelectStatement, dc)
 
            Try
 
                da.Fill(ds)
                dc.Close()
                da.Dispose()
 
            Catch ex As Exception
                dc.Close()
                'Throw ex
 
            End Try
        End If
 
        Return GenerateDataTable(ds)

Open in new window

0
Comment
Question by:Sheritlw
  • 2
  • 2
4 Comments
 
LVL 4

Expert Comment

by:y0usuf
ID: 24055598
You can use ds.tables(0).rows.count.
check
if ds.tables(0).rows.count>0 then

 ' Block Of Code

End If


Please let me know if I am not following your question correctly.
0
 

Author Comment

by:Sheritlw
ID: 24055674
How does the dataset know what is in there since the fill will go after the "if ds.tables(0).rows.count>0 then".  There is no other reference to the dataset until then?
Thanks
0
 
LVL 4

Accepted Solution

by:
y0usuf earned 500 total points
ID: 24055915
Where are you getting the exception in your code? I am guessing it is not when you fill the dataset. You need to check for the row count before you use the dataset( You need to fill the dataset and then check for row count before using it).
0
 

Author Comment

by:Sheritlw
ID: 24057346
I was getting the error right on the da.fill(ds).  I just tried again and I no longer get the error.  Not sure what is going on, but thanks for your help
0

Featured Post

Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

If you're writing a .NET application to connect to an Access .mdb database and use pre-existing queries that require parameters, you've come to the right place! Let's say the pre-existing query(qryCust) in Access takes a Date as a parameter and l…
Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question