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ArrayFindIndexT Method (T, 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 Array that starts at the specified index and contains the specified number of elements.

Namespace: System
Assembly: mscorlib (in mscorlib.dll) Version: 4.0.0.0
Syntax
C#
Copy
public static int FindIndex<T>(
	T[] array,
	int startIndex,
	int count,
	Predicate<T> match
)

Parameters

array
Type: T
The one-dimensional, zero-based Array to search.
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 that defines the conditions of the element to search for.

Type Parameters

T
The type of the elements of the array.

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
ExceptionCondition
ArgumentNullExceptionarray is null.-or-match is null.
ArgumentOutOfRangeExceptionstartIndex is outside the range of valid indexes for array.-or-count is less than zero.-or-startIndex and count do not specify a valid section in array.
See Also