ReadOnlyCollection<T>.IList.IndexOf(Object) Method

Definition

Determines the index of a specific item in the IList.

 virtual int System.Collections.IList.IndexOf(System::Object ^ value) = System::Collections::IList::IndexOf;
int IList.IndexOf (object value);
Function IndexOf (value As Object) As Integer Implements IList.IndexOf

Parameters

value
Object

The Object to locate in the IList.

Returns

The index of value if found in the list; otherwise, -1.

Implements

Exceptions

value is not of the type specified for the generic type parameter T.

Remarks

This method determines equality using the default comparer EqualityComparer<T>.Default.

This method performs a linear search; therefore, this method is an O(n) operation, where n is Count.

This member is an explicit interface member implementation. It can be used only when the ReadOnlyCollection<T> instance is cast to an IList interface.

Applies to