Parameters

value

The object to locate in the current instance.

startIndex

A int that specifies the index at which searching starts. This value is between 0 and the ArrayList.Count of the current instance - 1, inclusive.

Returns

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

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

Exceptions

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

Remarks

Operation

As described above.

The ArrayList is searched backward starting at startIndex.

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