How to convert IEnumerable

Question

Hi friends, i am stuck with converting IEnumerable into ReadOnlyCollection . IEnumerable contains integer values. Thanks in advance. Nitingowda ....

Prasad Raveendran · Answer

Hope this would help using System.Collections.Generic; using System.Collections.ObjectModel; IEnumerable enumerable = new List { 1, "two", 3, "four", 5 }; // Step 1: Filter integers from the IEnumerable IEnumerable filteredIntegers = enumerable.OfType (); // Step 2: Create a ReadOnlyCollection from the filtered integers ReadOnlyCollection readOnlyCollection = new ReadOnlyCollection (filteredIntegers.ToList()); Please note that any objects in the IEnumerable that are not of type int will be excluded from the resulting ReadOnlyCollection .

Amit Mohanty · Answer

Check this: // Replace with your IEnumerable source IEnumerable enumerable = GetYourIEnumerableObject(); ReadOnlyCollection readOnlyCollection = enumerable.OfType ().ToList().AsReadOnly();

Sam Hobbs · Answer

Are you certain that all items are integers? Where does the IEnumerable come from? If it is possible to get an IEnumerable instead of IEnumerable then that would make it easier therefore if you can tell us where it is coming from then that might help.

How to convert IEnumerable<object> into ReadOnlyCollection<int>

Answers (3)