Export (0) Print
Expand All

ListBox.ObjectCollection.IndexOf Method

Returns the index within the collection of the specified item.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public int IndexOf(
	Object value
)

Parameters

value
Type: System.Object

An object representing the item to locate in the collection.

Return Value

Type: System.Int32
The zero-based index where the item is located within the collection; otherwise, negative one (-1).

Implements

IList.IndexOf(Object)

ExceptionCondition
ArgumentNullException

The value parameter is null.

The IndexOf method enables you to determine where an item is located within the collection. To determine whether an item is located within the collection before calling this method, use the Contains method.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
Show:
© 2015 Microsoft