PropertyCollection.IDictionary.Contains(Object) Method

Reference

Definition

Namespace:: System.DirectoryServices

Assembly:: System.DirectoryServices.dll

Package:: System.DirectoryServices v10.0.0-preview.1.25080.5

Source:: PropertyCollection.cs

Source:: PropertyCollection.cs

Source:: PropertyCollection.cs

Source:: PropertyCollection.cs

Source:: PropertyCollection.cs

Important

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Determines whether the IDictionary object contains an element with the specified key.

 virtual bool System.Collections.IDictionary.Contains(System::Object ^ value) = System::Collections::IDictionary::Contains;

bool IDictionary.Contains(object value);

abstract member System.Collections.IDictionary.Contains : obj -> bool
override this.System.Collections.IDictionary.Contains : obj -> bool

Function Contains (value As Object) As Boolean Implements IDictionary.Contains

Parameters

value: Object

The key to locate in the IDictionary object.

Returns

Boolean

true if the IDictionary contains an element with the key; otherwise, false.

Implements

Contains(Object)

Exceptions

ArgumentNullException

value is null.

Examples

The following example demonstrates how to implement the Contains method. This example is part of a larger example provided for the IDictionary class.

public:
    virtual bool Contains(Object^ key)
    {
        int index;
        return TryGetIndexOfKey(key, &index);
    }

public bool Contains(object key)
{
   Int32 index;
   return TryGetIndexOfKey(key, out index);
}

Public Function Contains(ByVal key As Object) As Boolean Implements IDictionary.Contains
    Dim index As Integer
    Return TryGetIndexOfKey(key, index)
End Function

Applies to

Продукт	Версии
.NET	8 (package-provided), 9 (package-provided), 10 (package-provided)
.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
.NET Standard	2.0 (package-provided)
Windows Desktop	3.0, 3.1, 5, 6, 7, 8, 9, 10

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