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StringCollection::IsSynchronized Property

 

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

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

public:
property bool IsSynchronized {
	virtual bool get() sealed;
}

Property Value

Type: System::Boolean

This property always returns false.

StringCollection implements the IsSynchronized property because it is required by the ICollection interface.

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.

The following code example shows how to lock the collection using the SyncRoot during the entire enumeration:

StringCollection^ myCollection = gcnew StringCollection();
bool lockTaken = false;
try
{
    Monitor::Enter(myCollection->SyncRoot, lockTaken);
    for each (Object^ item in myCollection)
    {
        // Insert your code here.
    }
}
finally
{
    if (lockTaken)
    {
        Monitor::Exit(myCollection->SyncRoot);
    }
}

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

Universal Windows Platform
Available since 10
.NET Framework
Available since 1.1
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