CollectionT, TCollectionFirst Method | 
| Name | Description | |
|---|---|---|
| First | 
            Gets the first value.
            Throws an exception if there are
            no values in the collection.
              | |
| First(Function1T, Boolean) | 
            Gets the first value that matches
            the specified predicate.
            Throws an exception if there are
            no such values in the collection.
              |