StringDictionary::IsSynchronized Property

 
System_CAPS_noteNote

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

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

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

Property Value

Type: System::Boolean

true if access to the StringDictionary is synchronized (thread safe); otherwise, false.

A StringDictionary instance is not synchronized. Derived classes can provide a synchronized version of the StringDictionary using the SyncRoot property.

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.

StringDictionary^ myCollection = gcnew StringDictionary();
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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