SQL & Loading results into combobox

Hello,

I am trying to load the results of my SQL query into a combobox called cboTemplate.

That works, but is there a way to select one of the items and do something with it?

I tried:

VB Code:

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
 
If cboTemplate.SelectedItem = "New" Then
        MsgBox("wow")
End If
 
End Sub

But it returns an error:

An unhandled exception of type 'System.InvalidCastException'
occurred in microsoft.visualbasic.dll

Additional information: Cast from type 'DataRowView' to
type 'String' is not valid.

'Here is my code

VB Code:

Private Sub cboVolume_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cboVolume.SelectedIndexChanged
 
        Dim strSQL As String
        'Connect to the data source.
        Dim objConn As SqlConnection = New SqlConnection( _
        "Initial Catalog=Card Services;" & _
        "Data Source=CHRISXP\LASERFICHE;Integrated Security=SSPI;")
 
        Me.cboTemplate.Items.Clear()
        Try
 
            objConn.Open()
 
            strSQL = "SELECT DISTINCT Tstr.TemplateName "
            strSQL &= "FROM Vol, Toc, Tstr WHERE Vol.VolumeName = " & _
                    "'" & cboVolume.SelectedItem & "'" & _
                    " AND Vol.VolumeId = Toc.VolumeId AND Toc.TemplateId = Tstr.TemplateId"
 
            Dim command As SqlCommand = New SqlCommand(strSQL, objConn)
            Dim objAdapter As SqlDataAdapter = New SqlDataAdapter(command)
            Dim dataSet As DataSet = New DataSet()
            objAdapter.Fill(dataSet, "Tstr")
 
            Me.cboTemplate.DataSource = dataSet.Tables("Tstr").DefaultView
            Me.cboTemplate.DisplayMember = "TemplateName"
 
        Catch ex As Exception
            MsgBox(ex.Message)
        Finally
            objConn.Close()
        End Try
    End Sub

Thanks for your suggestions!

Chris