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NameScope.Contains Method

Determines whether the collection contains a specified item.

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

public bool Contains(
	KeyValuePair<string, Object> item


Type: System.Collections.Generic.KeyValuePair<String, Object>
The item to find in the collection, specified as a KeyValuePair<TKey, TValue> (key is String, value is Object).

Return Value

Type: System.Boolean
true if the specified KeyValuePair<TKey, TValue> identifies an existing mapping in this NameScope . false if the specified KeyValuePair<TKey, TValue> does not exist in the current NameScope.




key is null.

Generally you are only interested in whether a name is already defined in the XAML namescope, and what object reference value it is mapped to is immaterial. For this scenario, you can call ContainsKey instead.

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.