ArrayList.IndexOf Method (Object, Int32)

ArrayListIndexOf Method (Object, Int32)

Searches for the specified Object and returns the zero-based index of the first occurrence within the range of elements in the ArrayList that extends from the specified index to the last element.

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

Syntax

Copy

public virtual int IndexOf(
	Object value,
	int startIndex
)

Parameters

value: Type: SystemObject
The Object to locate in the ArrayList. The value can be null.
startIndex: Type: SystemInt32
The zero-based starting index of the search. 0 (zero) is valid in an empty list.

Return Value

Type: Int32
The zero-based index of the first occurrence of value within the range of elements in the ArrayList that extends from startIndex to the last element, if found; otherwise, -1.

Exceptions

Exception	Condition
ArgumentOutOfRangeException	startIndex is outside the range of valid indexes for the ArrayList.

Reference

ArrayList Class

IndexOf Overload

System.Collections Namespace