NameScope.ContainsKey(String) Method

Reference

Definition

Namespace:: System.Windows

Assembly:: WindowsBase.dll

Important

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Returns whether a provided name already exists in this NameScope.

public:
 virtual bool ContainsKey(System::String ^ key);

public bool ContainsKey(string key);

abstract member ContainsKey : string -> bool
override this.ContainsKey : string -> bool

Public Function ContainsKey (key As String) As Boolean

Parameters

key: String

The string key to find.

Returns

Boolean

true if the specified key identifies a name for an existing mapping in this NameScope. false if the specified key does not exist in the current NameScope.

Implements

ContainsKey(TKey)

Exceptions

ArgumentNullException

key is null.

Remarks

Names in a XAML namescope must use a particular grammar that restricts the strings you might use for inputs of NameScope API. See XamlName Grammar.

Applies to

Product	Versions
.NET Framework	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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