StringDictionary.IsSynchronized Property


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

 virtual property bool IsSynchronized { bool get(); };
public virtual bool IsSynchronized { get; }
member this.IsSynchronized : bool
Public Overridable ReadOnly Property IsSynchronized As Boolean

Property Value

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


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

StringDictionary^ myCollection = gcnew StringDictionary();
bool lockTaken = false;
    Monitor::Enter(myCollection->SyncRoot, lockTaken);
    for each (Object^ item in myCollection)
        // Insert your code here.
    if (lockTaken)
StringDictionary myCollection = new StringDictionary();
    foreach (Object item in myCollection)
        // Insert your code here.
Dim myCollection As New StringDictionary()
SyncLock myCollection.SyncRoot
    For Each item As Object In myCollection
        ' Insert your code here.
    Next item
End SyncLock

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


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.

Applies to