StringCollection.IList.IndexOf Method (Object)
Assembly: System (in System.dll)
Return ValueType: System.Int32
The zero-based index of the first occurrence of value within the entire StringCollection, if found; otherwise, -1.
The StringCollection is searched forward starting at the first element and ending at the last element.
This method determines equality by calling Object.Equals.
This method performs a linear search; therefore, this method is an O(n) operation, where n is Count.
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 the 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.
Available since 10
Available since 1.1