SyncRoot Property

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Gets an object that can be used to synchronize access to the Hashtable.

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

public Object SyncRoot { get; }

Property Value

Type: System..::..Object
An object that can be used to synchronize access to the Hashtable.



To create a synchronized version of the Hashtable, use the Synchronized method. However, derived classes can provide their own synchronized version of the Hashtable using the SyncRoot property. The synchronizing code must perform operations on the SyncRoot of the Hashtable, not directly on the Hashtable . This ensures proper operation of collections that are derived from other objects. Specifically, it maintains proper synchronization with other threads that might be simultaneously modifying the Hashtable object.

Enumerating through a collection is intrinsically not a thread safe procedure. Even when a collection is synchronized, other threads can still modify the collection, which causes the enumerator to throw an exception. To guarantee thread safety during enumeration, you can either lock the collection during the entire enumeration or catch the exceptions resulting from changes made by other threads.