Binding Report Controls to Datasource dynamically

[The Beginner]

Hi,
I am trying to use Microsoft Reports in my Application. I have done this successfully using Report Wizard, but I want to do it dynamically now. I have created Dataset and BindingSource uptill now but I am unable to populate controls like textboxes on the Report4.rdlc with the data from the dataset. Can someone plz help me with this. So far I am here... and there is no error but I don't know how to display the data...

Dim cn As New SqlConnection("myconnectionstring")
        cn.Open()
        Dim ds As New DataSet
        Dim bs As New BindingSource
        Dim cmd As New SqlCommand("Select * from ItemCount", cn)
        Dim da As New SqlDataAdapter
        Dim ReportSource1 As New Microsoft.Reporting.WinForms.ReportDataSource
        da.SelectCommand = cmd
        da.Fill(ds, "ItemCount")
        bs.DataSource = ds
        bs.DataMember = "ItemCount"
        ReportSource1.Name = "ds_ItemCount"
        ReportSource1.Value = bs
        ReportViewer1.LocalReport.DataSources.Add(ReportSource1)
        ReportViewer1.LocalReport.ReportEmbeddedResource = "ReportsApplication2.Report4.rdlc"
        Me.ReportViewer1.RefreshReport()