Private ReadOnly Property SyncRoot As [%$TOPIC/bb382778_en-us_VS_110_2_0_0_0_0%] 
	Implements [%$TOPIC/bb382778_en-us_VS_110_2_0_0_0_1%].[%$TOPIC/bb382778_en-us_VS_110_2_0_0_0_2%]

[%$TOPIC/bb382778_en-us_VS_110_2_0_1_0_0%] [%$TOPIC/bb382778_en-us_VS_110_2_0_1_0_1%].[%$TOPIC/bb382778_en-us_VS_110_2_0_1_0_2%] { get; }

private:
virtual property [%$TOPIC/bb382778_en-us_VS_110_2_0_2_0_0%]^ SyncRoot {
	[%$TOPIC/bb382778_en-us_VS_110_2_0_2_0_1%]^ get () sealed = [%$TOPIC/bb382778_en-us_VS_110_2_0_2_0_2%]::[%$TOPIC/bb382778_en-us_VS_110_2_0_2_0_3%]::get;
}

private abstract SyncRoot : [%$TOPIC/bb382778_en-us_VS_110_2_0_3_0_0%] with get 
private override SyncRoot : [%$TOPIC/bb382778_en-us_VS_110_2_0_3_0_1%] with get

Implements

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

Enumerating through a collection is intrinsically not a thread-safe procedure. To guarantee thread safety during enumeration, 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. The following code shows the use of the SyncRoot property for C#, C++, and Visual Basic.

ICollection ic = ...;
lock (ic.SyncRoot) {
   // Access the collection.
}

Dim ic As ICollection = ...
SyncLock ic.SyncRoot
   ' Access the collection.
End SyncLock

ICollection^ ic = ...;
try {
   Monitor::Enter(ic->SyncRoot);
   // Access the collection.
}
finally {
   Monitor::Exit(ic->SyncRoot);
}

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

.NET Framework

.NET Framework Client Profile

Portable Class Library

.NET for Windows Store apps

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference