Lazy(T) Constructor (Func(T), LazyThreadSafetyMode)

Lazy<T> Constructor (Func<T>, LazyThreadSafetyMode)

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Initializes a new instance of the Lazy<T> class that uses the specified initialization function and thread safety mode.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

public Lazy(
	Func<T> valueFactory,
	LazyThreadSafetyMode mode


Type: System.Func<T>
The delegate that is invoked to produce the lazily initialized value when it is needed.
Type: System.Threading.LazyThreadSafetyMode
One of the enumeration values that specifies the thread safety mode.


mode contains an invalid value.


valueFactory is null.

The thread safety mode of a Lazy<T> instance describes the behavior when multiple threads try to initialize the Lazy<T> instance.

Exceptions that are thrown by valueFactory are cached, unless mode is PublicationOnly. For more information, see the System.Threading.LazyThreadSafetyMode enumeration.

Windows Phone OS

Supported in: 8.1, 8.0

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