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