I can’t seem to find the right argument to make the high lighted call work. TIA JP

Code:
  Private Sub FindButton_Click(sender As Object, e As EventArgs) Handles FindButton.Click

        ' Check fo a non blank SearchForTextBox then go to RadioButtons_CheckedChange(ByVal
        If SearchForTextBox.Text <> "" Then
            RadioButtons_CheckedChange(???????????)
        Else
            MessageBox.Show("Please enter search argument", "Input Check!", MessageBoxButtons.OK,
                            MessageBoxIcon.Question)
            SearchForTextBox.Focus()
        End If
    End Sub

    Private Sub RadioButtons_CheckedChange(ByVal sender As System.Object, ByVal e As System.EventArgs) _
        Handles StateNameRadioButton.CheckedChanged, StdAbrvRadioButton.CheckedChanged, PostalAbrvRadioButton.CheckedChanged,
                    PostalAbrvRadioButton.CheckedChanged
        Dim SelectedRadioButton As RadioButton
        SelectedRadioButton = CType(sender, RadioButton)

        Select Case SelectedRadioButton.Name
            Case "StateNameRadioButton"
                SearchByName()
            Case "StateAbrvRadioButton"
                SearchbyStdAbrv()
            Case "StateAbrvRadioButton"
                SearchByPostal()
            Case "StateAbrvRadioButton"
                SearchByCapitalCity()
        End Select
    End Sub