Help with dataadapter.update

In a VB.Net Windows application, I have a form with a datagridview on which the user can add, update and delete rows.  When the user has completed all entries, I would like to call the dataadapter.update command to write the information to the table in the SQL Server database.  But nothing is being written to the database.  I've mever worked with the DataGridView before, so this is new to me.  I'm missing something.  Attached are segments of code where the connection to the database is made and the data table is filled as well as where I attempt to use the cmdbuilder to insert, update and delete rows in the database.  Can someone help?  It would be greatly appreciated!
'Code to create the data adapter, data table and the cmdbuilder

        Try
            conn.open
            daHospInvData = New SqlClient.SqlDataAdapter("GetInvoiceData", conn)
            dtHospInvData.Clear()
            daHospInvData.SelectCommand.CommandType = CommandType.StoredProcedure
            cmdBuilder = New SqlCommandBuilder(daHospInvData)
            daHospInvData.Fill(dtHospInvData)
        Catch ex As Exception
            MessageBox.Show(ex.Message)
        Finally
            conn.Close()
        End Try
        DataGridView1.DataSource = dtHospInvData

'Add/Update/Delete information on the datagridview

'Code to save the information to the database

cmdBuilder.GetInsertCommand()
daHospInvData.Update(dtHospInvData)
cmdBuilder.GetUpdateCommand()
daHospInvData.Update(dtHospInvData)
cmdBuilder.GetDeleteCommand()
daHospInvData.Update(dtHospInvData)

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kshumwayAsked:
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deightonConnect With a Mentor progCommented:
can the command builder build update commands for data taken from a stored procedure?

also I always did

daHospInvData.InsertCommand = cmdBuilder.GetInsertCommand()
.

etc, for each of the 3 commands first before the .update, and also there is something about

daHospInvData.FillSchema(dtHospInvData,SchemaType.Source,"isYourTable")

just before the .fill

andy you might need to go to in-line SQL


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kshumwayAuthor Commented:
Thank you so much for your response.

The stored procedue is simply "SELECT * FROM [Hospital Invoice Data] ORDER BY BillDate;"  Would that cause a problem?  If so, what should I change it to?

I changed the cmdbuilder statements as you recommended, but the statement " daHospInvData.FillSchema(dtHospInvData,SchemaType.Source,"isYourTable") " is giving an error because it is looking for a dataset, not a datatable as the first parameter.  So I did not use that.

When I ran the program with the cmdbuilder statements updated, it still did not save anything to the database.  

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kshumwayAuthor Commented:
Stop the presses - it is working.  Not sure, but whenI tried it again, it's working fine.  Thank you so much for your help!!!
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kshumwayAuthor Commented:
Could not use the FillSchema statement because I'm not using a dataset.  But the other recommendations fixed the problem.  thank you sooooo much
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deightonprogCommented:
you are welcome, actually that has taught me something I think, the command builder must be able to go into the stored proc somehow.
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kshumwayAuthor Commented:
Yes it works fine using the stored procedure.  Thanks again!
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