List(Of T).FindLastIndex Method (Int32, Predicate(Of T))

 

Searches for an element that matches the conditions defined by the specified predicate, and returns the zero-based index of the last occurrence within the range of elements in the List(Of T) that extends from the first element to the specified index.

Namespace:   System.Collections.Generic
Assembly:  mscorlib (in mscorlib.dll)

Public Function FindLastIndex (
	startIndex As Integer,
	match As Predicate(Of T)
) As Integer

Parameters

startIndex
Type: System.Int32

The zero-based starting index of the backward search.

match
Type: System.Predicate(Of T)

The Predicate(Of T) delegate that defines the conditions of the element to search for.

Return Value

Type: System.Int32

The zero-based index of the last occurrence of an element that matches the conditions defined by match, if found; otherwise, –1.

Exception Condition
ArgumentNullException

match is null.

ArgumentOutOfRangeException

startIndex is outside the range of valid indexes for the List(Of T).

The List(Of T) is searched backward starting at startIndex and ending at the first element.

The Predicate(Of T) is a delegate to a method that returns true if the object passed to it matches the conditions defined in the delegate. The elements of the current List(Of T) are individually passed to the Predicate(Of T) delegate.

This method performs a linear search; therefore, this method is an O(n) operation, where n is the number of elements from the beginning of the List(Of T) to startIndex.

Universal Windows Platform
Available since 8
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
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