ListBox.ObjectCollection.IndexOf(Object) Method

Reference

Definition

Namespace:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

Source:: ListBox.ObjectCollection.cs

Source:: ListBox.ObjectCollection.cs

Source:: ListBox.ObjectCollection.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Returns the index within the collection of the specified item.

public:
 virtual int IndexOf(System::Object ^ value);

public:
 int IndexOf(System::Object ^ value);

public int IndexOf (object value);

abstract member IndexOf : obj -> int
override this.IndexOf : obj -> int

member this.IndexOf : obj -> int

Public Function IndexOf (value As Object) As Integer

Parameters

value: Object

An object representing the item to locate in the collection.

Returns

Int32

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

Implements

IndexOf(Object)

Exceptions

ArgumentNullException

The value parameter is null.

Remarks

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.

Applies to

次の方法で共有