How to bind static resource to combobox

   Dim templateCol As New DataGridTemplateColumn With {.Header = "Items"}
templateCol.CellTemplate = XamlReader.Load("<DataTemplate xmlns='http://schemas.microsoft.com/client/2007'" & vbCr & vbLf & vbCr & vbLf & "xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'><ComboBox x:Name='ddl' ItemsSource='{Binding Source={StaticResource ddldata}}' DisplayMemberPath='ProductName' /> </DataTemplate>")
  dtg.Columns.Add(templateCol)