VB.net Select Multiple Files without holding Ctrl button

Hi

I am usingthe following VB.net code to allow the user to select multiple files while holding the Ctrl button.
Is there a way for the user to not hold the Ctrl button and still select multiple files?

     Me.OpenFileDialog1.Multiselect = True

            Dim dr As DialogResult = Me.OpenFileDialog1.ShowDialog()
            If (dr = System.Windows.Forms.DialogResult.OK) Then
                ' Read the files 
                Dim file As String
                For Each file In OpenFileDialog1.FileNames

                    Try
                        'MsgBox(file)
                        oFullWordToLookForInMaster = Get_Word_to_Match_Abbreviation(file)
                        Me.DataGridView1.Rows.Add("", "", file, oActiveSheetName, oFullWordToLookForInMaster, "", "")

                    Catch ex As Exception
                        MsgBox(ex.Message)
                    End Try
                Next file
            End If

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