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List(T).ICollection.IsSynchronized Property

Gets a value indicating whether access to the ICollection is synchronized (thread safe).

Namespace:  System.Collections.Generic
Assemblies:   mscorlib (in mscorlib.dll)
  System.Collections (in System.Collections.dll)

private abstract IsSynchronized : bool with get 
private override IsSynchronized : bool with get

Property Value

Type: System.Boolean
true if access to the ICollection is synchronized (thread safe); otherwise, false. In the default implementation of List(T), this property always returns false.

Implements

ICollection.IsSynchronized

Default implementations of collections in the System.Collections.Generic namespace are not synchronized.

Enumerating through a collection is intrinsically not a thread-safe procedure. In the rare case where enumeration contends with write accesses, you can lock the collection during the entire enumeration. To allow the collection to be accessed by multiple threads for reading and writing, you must implement your own synchronization.

SyncRoot returns an object that can be used to synchronize access to the ICollection. Synchronization is effective only if all threads lock this object before accessing the collection.

Retrieving the value of this property is an O(1) operation.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Portable Class Library

Supported in: Portable Class Library
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