Parameters

value

The object to locate in the current instance.

startIndex

A int that specifies the index at which searching starts.

count

A int that specifies the number of elements to search, beginning with startIndex .

Returns

A int that specifies the index of the last occurrence of value in the current instance, within the range startIndex through startIndex - count + 1, if found; otherwise, -1.

Note: This provides the caller with a standard code for a failed search.

Exceptions

Type	Reason
ArgumentOutOfRangeException	startIndex < 0. -or- count < 0. -or- startIndex >= ArrayList.Count of the current instance. -or- count >= ArrayList.Count of the current instance. -or- count > startIndex + 1.

Remarks

Operation

As described above.

The ArrayList is searched backward starting at startIndex and ending at startIndex - count + 1.

This method uses Array.LastIndexOf(Array, object) to search the current instance for value.

Note: For the default implementation, this method performs a linear search. On average, this is an O(count/2) operation. The longest search is an O(count) operation.

Requirements

Namespace: System.Collections
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0