NameScope.Contains Method (KeyValuePair<String, Object>)

.NET Framework (current version)
 
System_CAPS_noteNote

The .NET API Reference documentation has a new home. Visit the .NET API Browser on docs.microsoft.com to see the new experience.

Determines whether the collection contains a specified item.

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

abstract Contains : 
        item:KeyValuePair<string, Object> -> bool
override Contains : 
        item:KeyValuePair<string, Object> -> bool

Parameters

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.

Exception Condition
ArgumentException

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
Available since 4.0
Return to top
Show: