List(T).FindIndex Method (Int32, Int32, Predicate(T))

ListTFindIndex Method (Int32, Int32, PredicateT)

Searches for an element that matches the conditions defined by the specified predicate, and returns the zero-based index of the first occurrence within the range of elements in the ListT that starts at the specified index and contains the specified number of elements.

Namespace: System.Collections.Generic
Assembly: mscorlib (in mscorlib.dll) Version: 4.0.0.0

Syntax

Copy

public int FindIndex(
	int startIndex,
	int count,
	Predicate<T> match
)

Parameters

startIndex: Type: SystemInt32
The zero-based starting index of the search.
count: Type: SystemInt32
The number of elements in the section to search.
match: Type: SystemPredicateT
The PredicateT delegate that defines the conditions of the element to search for.

Return Value

Type: Int32
The zero-based index of the first occurrence of an element that matches the conditions defined by match, if found; otherwise, –1.

Exceptions

Exception	Condition
ArgumentNullException	match is null.
ArgumentOutOfRangeException	startIndex is outside the range of valid indexes for the ListT.-or-count is less than 0.-or-startIndex and count do not specify a valid section in the ListT.

Reference

ListT Class

FindIndex Overload

System.Collections.Generic Namespace