Index out of range no row at position 0

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VB

Private Sub LoadSession()

        Dim cmd1 As New OleDbCommand("Select SessionID,SessionName from mstSession where ActiveState='Yes' ", sqlcon)
        Dim dtSession As New DataTable
        Dim adp1 As New OledbDataAdapter(cmd1)
        adp1.Fill(dtSession)
        Dim drow As DataRow = dtSession.NewRow()
        drow(0) = 0
        drow(1) = "Select Session"
        dtSession.Rows.InsertAt(drow, 0)
        cmbSession.DataSource = dtSession
        cmbSession.DisplayMember = "SessionName"
        cmbSession.ValueMember = "SessionID"
        dtSession = New DataTable
        dtSession = objdataacess.FillDataTable_Query("select isnull((max(ReceiptNo)+1),1)from txnFeePayment")
        txtReceiptNo.Text = dtSession.Rows(0)(0)
        dtp.Text = Now()
        cmd1.Dispose()

    End Sub

Posted 23-Jul-15 13:50pm

Member 11464677

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Member 11464677 · Answer 1 · 2015-07-23T14:17:00

VB

Private Sub ID()
        Dim r0 As String = "100"
        Dim insert_constr As String = cnSettings()
        Dim insert_cmdstr As String = "select [ReceiptNo] from txnFeePayment"
        Dim insert_con As New OleDbConnection(insert_constr)
        Dim insert_com As New OleDbCommand(insert_cmdstr, insert_con)
        insert_con.Open()
        Dim insert_DR As OleDbDataReader = insert_com.ExecuteReader
        While insert_DR.Read
            r0 = insert_DR(0)
        End While
        insert_con.Close()
        txtReceiptNo.Text = r0 + 1
    End Sub

Used this code to avoid that error at load event of form . ...