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updating table via VB.net and stored procedure

Last Modified: 2016-06-21

Can anyone see where I'm going wrong here?  I get an error saying it can't find the stored procedure.  The stored procedure is working correctly and returns the right @NextBatch number and it's returned to the form.  However it's the next bit when attempting to update the tbl_batches table where it's all going wrong.

Here is my code;

    Private Sub cmdCreateBactch_Click(sender As Object, e As EventArgs) Handles cmdCreateBactch.Click
        Dim con As New SqlConnection
        Dim cmd As New SqlCommand
        'Dim reader As SqlDataReader

            Dim returnbatch As Integer = 0
            Dim customerID As String
            Dim batchref As String
            Dim todaysdate As String = String.Format("{0:dd/MM/yyyy}", DateTime.Now)

            con.ConnectionString = My.Settings.TestValue()
            cmd.Connection = con
            cmd.CommandText = "p_GetNextBatchNumber"
            cmd.CommandType = CommandType.StoredProcedure
            cmd.Parameters.Add("@CustomerID", SqlDbType.Char)
            cmd.Parameters("@CustomerID").Value = txtCustomerNumber.Text
            cmd.Parameters.Add("@NextBatch", SqlDbType.Int).Direction = ParameterDirection.Output

            Dim sqlReader As SqlDataReader = cmd.ExecuteReader()

            returnbatch = Convert.ToInt32(cmd.Parameters("@NextBatch").Value)
            batchref = txtCustomerNumber.Text & "-" & returnbatch
            txtBatchNumber.Text = returnbatch
            txtBatchReference.Text = batchref
            txtCreateDate.Text = todaysdate
            customerID = txtCustomerNumber.Text
            cmd.CommandText = "INSERT INTO tbl_batches ([customer_id], [batch_number], [batch_reference]) VALUES([@customerID], [@returnbatch], [@batchref])"

        Catch ex As Exception
            MessageBox.Show("Error while inserting record on table..." & ex.Message, "Insert Records")
        End Try

    End Sub

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