Not getting results in datagrid view

[dougancil]

I have two forms and I'm trying to pass a declared variable from form1 to form2 and then pass that variable in a sql query that I have in a dataset that is bound to my form. I know that my query works but it's not producing any data. I have debugged my form and can see the data being passed in the variables elsewhere on the page but I'm not sure of the syntax within the query. Can someone please offer assistance.

My variables are declared in a module:

Public Module myGlobalVars
    Public payPeriodStartDate As New System.DateTime
    Public payPeriodEndDate As New System.DateTime
End Module

and here is form1:

Imports System.Data.SqlClient

Public Class Main
    Dim instForm2 As New Exceptions
    Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles startpayrollButton.Click
        Dim ssql As String = "select MAX(payrolldate) AS [payrolldate], " & _
                 "dateadd(dd, ((datediff(dd, '17530107', MAX(payrolldate))/7)*7)+7, '17530107') AS [Sunday]" & _
                  "from dbo.payroll" & _
                  " where payrollran = 'no'"
        Dim oCmd As System.Data.SqlClient.SqlCommand
        Dim oDr As System.Data.SqlClient.SqlDataReader

        oCmd = New System.Data.SqlClient.SqlCommand
        Try
            With oCmd
                .Connection = New System.Data.SqlClient.SqlConnection("Initial Catalog=xxxxx;Data Source=xxxxx;uid=xxxxx;password=xxxxx")
                .Connection.Open()
                .CommandType = CommandType.Text
                .CommandText = ssql
                oDr = .ExecuteReader()
            End With
            If oDr.Read Then
                payPeriodStartDate = oDr.GetDateTime(1)
                payPeriodEndDate = payPeriodStartDate.AddDays(7)
                Dim ButtonDialogResult As DialogResult
                ButtonDialogResult = MessageBox.Show("      The Next Payroll Start Date is: " & payPeriodStartDate.ToString() & System.Environment.NewLine & "            Through End Date: " & payPeriodEndDate.ToString())
                If ButtonDialogResult = Windows.Forms.DialogResult.OK Then

                    exceptionsButton.Enabled = True
                    startpayrollButton.Enabled = False

                End If
            End If
            oDr.Close()
            oCmd.Connection.Close()
        Catch ex As Exception
            MessageBox.Show(ex.Message)
            oCmd.Connection.Close()
        End Try

    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles exceptionsButton.Click
        Exceptions.Show()
    End Sub

    Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
        EmployeeEditform.Show()
    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

    End Sub
End Class

and here is form 2 sql query:

SELECT Employeenumber, Exceptiondate, Starttime, Endtime,Duration, Code, Submittedby FROM Exceptions   
WHERE [Exceptions].exceptiondate   >= '" & payperiodStartDate &   
"' and [Exceptions].exceptiondate <='" & payPeriodEndDate & "'

The sql query works as I've debugged it within the form itself and I can see the correct data being presented, but it's just not showing up in the datagrid view. Any help would be greatly appreciated.

Thank you,

Doug