ListBox.ObjectCollection.Contains(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

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Determines whether the specified item is located within the collection.

public:
 virtual bool Contains(System::Object ^ value);

public:
 bool Contains(System::Object ^ value);

public bool Contains(object value);

abstract member Contains : obj -> bool
override this.Contains : obj -> bool

member this.Contains : obj -> bool

Public Function Contains (value As Object) As Boolean

Parameters

value: Object

An object representing the item to locate in the collection.

Returns

Boolean

true if the item is located within the collection; otherwise, false.

Implements

Contains(Object)

Exceptions

ArgumentNullException

value is null.

Remarks

The Contains method enables you to determine whether an object is a member of the collection. Once you know that the item is located within the collection, you can use the IndexOf method to determine where the item is located within the collection.

Applies to

Produkt	Verzie
.NET Framework	1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop	3.0, 3.1, 5, 6, 7, 8, 9, 10

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