MatchCollection.IList.IndexOf(Object) Method

Definition

Determines the index of a specific item in the collection.

int IList.IndexOf (object value);

Parameters

value
Object

The object to locate in the collection.

Returns

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

Implements

Remarks

Starting with the .NET Framework 2.0, this method uses the collection's objects' Equals and CompareTo methods on item to determine whether item exists. In earlier versions of the .NET Framework, this determination was made by using the Equals and CompareTo methods of the item parameter on the objects in the collection.

Applies to

產品 版本
.NET Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Standard 2.1