Question

Dim query = From o In myContainer.MyObjects Select o.MyStringProperty Distinct

Dim myProperties As List(Of String) = query.ToList????? 'no way!!!'

“query” type is IEnumerable(Of String)

I tried to use the query directly as a DataSource of a (infragistic) combobox, but it throws me NullReferenceException, so I decided to convert it to a listof strings, to be a more “classical” datasource.

Dim values As List(Of String) = query.AsQueryable().ToList()

does not work either: Value of type ‘System.Collections.Generic.List(Of System.Linq.IQueryable(Of String))’ cannot be converted to ‘System.Collections.Generic.List(Of String)’.

Answer 1

Finally, solved with good old method : )

  Dim values As New List(Of String)

  For Each item In query
    values.Add(item)
  Next item