List<T>.AsReadOnly Method is used to get a read-only ReadOnlyCollection<T> wrapper for the current collection.
public System.Collections.ObjectModel.ReadOnlyCollection<T> AsReadOnly ();
Return Value: It returns an object that acts as a read-only wrapper around the current List<T>.
Before Wrapping: 17 19 21 9 75 19 73 After Wrapping: 17 19 21 9 75 19 73 Adding new element to mylist: 17 19 21 9 75 19 73 35 Trying to add new element into readlist:
System.NotSupportedException: Collection is read-only.
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