OrderedDictionary::IsReadOnly Property
Gets a value indicating whether the OrderedDictionary collection is read-only.
Assembly: System (in System.dll)
Property Value
Type: System::Booleantrue if the OrderedDictionary collection is read-only; otherwise, false. The default is false.
Implements
IDictionary::IsReadOnlyA collection that is read-only does not allow the addition, removal, or modification of elements after the collection is created.
A collection that is read-only is simply a collection with a wrapper that prevents modification of the collection; therefore, if changes are made to the underlying collection, the read-only collection reflects those changes.
The following code example demonstrates the modification of an OrderedDictionary collection. In this example, the IsReadOnly property is used to determine whether the OrderedDictionary can be modified. This code is part of a larger code example that can be viewed at OrderedDictionary.
// Modifying the OrderedDictionary if (!myOrderedDictionary->IsReadOnly) { // Insert a new key to the beginning of the OrderedDictionary myOrderedDictionary->Insert(0, "insertedKey1", "insertedValue1"); // Modify the value of the entry with the key "testKey2" myOrderedDictionary["testKey2"] = "modifiedValue"; // Remove the last entry from the OrderedDictionary: "testKey3" myOrderedDictionary->RemoveAt(myOrderedDictionary->Count - 1); // Remove the "keyToDelete" entry, if it exists if (myOrderedDictionary->Contains("keyToDelete")) { myOrderedDictionary->Remove("keyToDelete"); } }
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.