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Re-fill dataset with different select statement

Posted on 2009-05-13
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Last Modified: 2012-05-06
I have a procedure that fills an FPSpread/Grid.
In this procedure I need to check and see if there are any records in the first dataset and if not I need to refill the dataset with a different select string.
What would be the best way to do this?
Thanks
Function FillSpread() As DataTable
        Dim ds As New DataSet
 
        If DatabaseToUse() = BizObjs.DBType.Access Then
 
            Dim str As String = String.Empty
 
            If mbTaskCars Then
                str = SelectTaskCars()
            ElseIf mbTaskDetailsLU Then
                str = SelectTaskDetailsLU()
 
            End If
 
            Dim dc As New OleDb.OleDbConnection(ConnectionString)
            Dim da As New OleDb.OleDbDataAdapter(str, dc)
 
            Try
 
                da.Fill(ds)
                If ds.Tables(0).Rows.Count = 0 Then
 
                    ds.Clear()
                    
 
                End If
                dc.Close()
 
 
            Catch ex As Exception
                MessageBox.Show(ex.Message)
                dc.Close()
 
            End Try
        End If
 
        Return GenerateDataTable(ds)
 
    End Function

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Question by:Sheritlw
2 Comments
 
LVL 39

Accepted Solution

by:
Pratima Pharande earned 2000 total points
ID: 24381849
try something like this
 Function FillSpread() As DataTable
        Dim ds As New DataSet
 
        If DatabaseToUse() = BizObjs.DBType.Access Then
 
            Dim str As String = String.Empty
 
            If mbTaskCars Then
                str = SelectTaskCars()
            ElseIf mbTaskDetailsLU Then
                str = SelectTaskDetailsLU()
 
            End If
 
            Dim dc As New OleDb.OleDbConnection(ConnectionString)
            Dim da As New OleDb.OleDbDataAdapter(str, dc)
 
            Try
 
                da.Fill(ds)
                If ds.Tables(0).Rows.Count = 0 Then
 
                    ds.Clear()
                    str = " New Select stattemet"
                    Dim daNew As New OleDb.OleDbDataAdapter(str, dc)
                    daNew.Fill(ds)
                End If
                dc.Close()
 
 
            Catch ex As Exception
                MessageBox.Show(ex.Message)
                dc.Close()
 
            End Try
        End If
 
        Return GenerateDataTable(ds)
 
    End Function

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Author Comment

by:Sheritlw
ID: 24382228
Thank you. That is what I finally figured out.  
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