How to fix "SelectedCommand property has not been initialized . . " error?

[dougancil]

I have the following code:

Public Class Payrollfinal
    Private Sub Payrollfinal_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        exportfileButton.Enabled = False
        Dim oCmd As System.Data.SqlClient.SqlCommand
        Dim oDr As System.Data.SqlClient.SqlDataReader
        oCmd = New System.Data.SqlClient.SqlCommand
        Dim _CMD As SqlCommand = New SqlCommand
        Dim adapter As System.Data.SqlClient.SqlDataAdapter = New System.Data.SqlClient.SqlDataAdapter
        Dim ds As New DataSet
        Try
            adapter.Fill(ds)
            With oCmd
                .Connection = New System.Data.SqlClient.SqlConnection("Initial Catalog=mdr;Data Source=xxxxx;uid=xxxxx;password=xxxxx")
                .Connection.Open()
                .CommandType = CommandType.StoredProcedure
                .Parameters.AddWithValue("@payperiodstartdate", payperiodstartdate)
                .Parameters.AddWithValue("@payperiodenddate", payperiodenddate)
                .CommandText = "sp_allsum"
                oDr = .ExecuteReader()
                oCmd.Connection.Close()
            End With
        Catch ex As Exception
            MessageBox.Show(ex.Message)
        End Try

        Try
        Catch ex As Exception
            MessageBox.Show(ex.Message)
            oCmd.Connection.Close()
        End Try
        exportfileButton.Enabled = True
    End Sub

and when I press the button that this event is connected to, I get the error:

The SelectCommand Property has not been initialized before calling 'Fill'

and I'm thinking that because on my other page, where I'm trying to run multiple queries with this code;

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Main.payrollButton.Enabled = True
        Main.exceptionsButton.Enabled = False
        Dim oCmd As System.Data.SqlClient.SqlCommand
        oCmd = New System.Data.SqlClient.SqlCommand
        Dim adapter As System.Data.SqlClient.SqlDataAdapter = New System.Data.SqlClient.SqlDataAdapter
        Dim ds As New DataSet
        Try
            With oCmd
                .Connection = New System.Data.SqlClient.SqlConnection("Initial Catalog=mdr;Data Source=xxxxx;uid=xxxxx;password=xxxxx")
                .Connection.Open()
                .CommandType = CommandType.StoredProcedure
                .CommandText = "exec sp_opsum @payperiodstartdate = " + payperiodstartdate + ",@payperiodenddate=" + payperiodenddate + ";" + _
"exec sp_opintcheck @payperiodstartdate = " + payperiodstartdate + ",@payperiodenddate=" + payperiodenddate + ";" + _
"exec sp_opexceptsum @payperiodstartdate = " + payperiodstartdate + ",@payperiodenddate=" + payperiodenddate + ";" + _
"exec sp_empsum @payperiodstartdate = " + payperiodstartdate + ",@payperiodenddate=" + payperiodenddate + ";" + _
"exec sp_empexceptsum @payperiodstartdate = " + payperiodstartdate + ",@payperiodenddate=" + payperiodenddate + ";"
                oCmd.Connection.Close()
            End With
        Catch ex As Exception
            MessageBox.Show(ex.Message)
        End Try

        Try

        Catch ex As Exception
            MessageBox.Show(ex.Message)
            oCmd.Connection.Close()
        End Try
        Me.Close()
    End Sub