ReadOnlyCollection<T>.IndexOf(T) Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Searches for the specified object and returns the zero-based index of the first occurrence within the entire ReadOnlyCollection<T>.
public:
virtual int IndexOf(T value);public int IndexOf (T value);abstract member IndexOf : 'T -> int
override this.IndexOf : 'T -> intPublic Function IndexOf (value As T) As IntegerParameters
- value
- T
The object to locate in the List<T>. The value can be null for reference types.
Returns
The zero-based index of the first occurrence of item within the entire ReadOnlyCollection<T>, if found; otherwise, -1.
Implements
Remarks
The ReadOnlyCollection<T> is searched forward starting at the first element and ending at the last element.
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.
