How can I convert IEnumerable<T> to List<T> in C#?

I am using LINQ to query a generic dictionary and then use the result as the datasource for my ListView (WebForms).

Simplified code:

Dictionary<Guid, Record> dict = GetAllRecords();
myListView.DataSource = dict.Values.Where(rec => rec.Name == "foo");
myListView.DataBind();

I thought that would work but in fact it throws a System.InvalidOperationException:

ListView with id 'myListView' must have a data source that either implements ICollection or can perform data source paging if AllowPaging is true.

In order to get it working I have had to resort to the following:

Dictionary<Guid, Record> dict = GetAllRecords();
List<Record> searchResults = new List<Record>();

var matches = dict.Values.Where(rec => rec.Name == "foo");
foreach (Record rec in matches)
    searchResults.Add(rec);

myListView.DataSource = searchResults;
myListView.DataBind();

Is there a small gotcha in the first example to make it work?

(Wasn't sure what to use as the question title for this one, feel free to edit to something more appropriate)