Stack.SyncRoot Property is used to get an object which can be used to synchronize access to the
Stack. Stack represents last-in, first out collection of object. It is used when you need last-in, first-out access to items. When you add an item in the list, it is called pushing the item and when you remove it, it is called popping the item. This class comes under
System.Collections namespace.
Syntax: public virtual object SyncRoot { get; }
Property Value: An object which can be used to synchronize access to the Stack.
Important Points:
- Synchronization of an object is done so that only one thread can manipulate the data in the Stack.
- A property is a member of a class that provides a means for reading, writing and computing private data fields.
- The synchronizing code cannot directly perform on the collection, so it must perform operations on the SyncRoot of the collection in order to guarantee the proper operation of collections that are derived from other objects.
- Retrieving the value of this property is an O(1) operation.
Below programs illustrate the use of the above-discussed property:
Example 1: In this code, we are using SyncRoot to get Synchronized access to the Stack named
st, which is not a thread-safe procedure and can cause an exception. So to avoid the exception we lock the collection during the enumeration.
Example 2:
