.NET Framework 4.6 and 4.5
Adds an element to the current set and returns a value to indicate if the element was successfully added.
- Type: T
The element to add to the set.
Type: System.Booleantrue if the element is added to the set; false if the element is already in the set.
Supported in: 4.6, 4.5, 4
.NET Framework Client Profile
Supported in: 4
Portable Class Library
Supported in: Portable Class Library
Supported in: Windows Phone 8.1
Supported in: Windows Phone Silverlight 8.1
Supported in: Windows Phone Silverlight 8
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