I am trying to populate a combobox and then fire an indexchanged event
handler.  My combobox populates fine, the problem is when it gets to
the datasource object (cmbClient.DataSource = ds), it immediately goes
to the event handler (SelectedIndexChanged), which later causes an
error. This is my code:

   Private Sub PopulateClient()
       Dim sqlConn As SqlConnection = New
SqlConnection(ConfigurationSettings.AppSettings("ConnectionString"))

       Try
           Dim ds As New DataSet("ds")
           Dim objDataAdapter As SqlDataAdapter = New SqlDataAdapter
           Dim cmd As SqlCommand = New SqlCommand("SELECT ClientName
FROM tblClients", sqlConn)

           sqlConn.Open()

           objDataAdapter.SelectCommand = cmd
           objDataAdapter.Fill(ds, "Clients")

           'Set up the Combobox bindings
           cmbClient.DataSource = ds
           cmbClient.SelectedIndex = 0
           cmbClient.DisplayMember = "Clients.ClientName"

       Catch ex As Exception
           'Error Handler
           lblError.Visible = True
           lblError.Text = Err.Description()
       Finally
           'Close the connection.
           sqlConn.Close()
       End Try
   End Sub

   Private Sub cmbClient_SelectedIndexChanged(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
cmbClient.SelectedIndexChanged
       Call PopulateEntity(cmbEntity.SelectedValue)
   End Sub

Any suggestions??