// Creates an empty CodeNamespaceCollection.            
CodeNamespaceCollection collection = new CodeNamespaceCollection();

// Adds a CodeNamespace to the collection.
collection.Add( new CodeNamespace("TestNamespace") );

// Adds an array of CodeNamespace objects to the collection.
CodeNamespace[] namespaces = { new CodeNamespace("TestNamespace1"), new CodeNamespace("TestNamespace2") };
collection.AddRange( namespaces );

// Adds a collection of CodeNamespace objects to the collection.
CodeNamespaceCollection namespacesCollection = new CodeNamespaceCollection();
namespacesCollection.Add( new CodeNamespace("TestNamespace1") );
namespacesCollection.Add( new CodeNamespace("TestNamespace2") );
collection.AddRange( namespacesCollection );

// Tests for the presence of a CodeNamespace in the collection,
// and retrieves its index if it is found.
CodeNamespace testNamespace = new CodeNamespace("TestNamespace");
int itemIndex = -1;
if( collection.Contains( testNamespace ) )
    itemIndex = collection.IndexOf( testNamespace );

// Copies the contents of the collection beginning at index 0,
// to the specified CodeNamespace array.
// 'namespaces' is a CodeNamespace array.
collection.CopyTo( namespaces, 0 );

// Retrieves the count of the items in the collection.
int collectionCount = collection.Count;

// Inserts a CodeNamespace at index 0 of the collection.
collection.Insert( 0, new CodeNamespace("TestNamespace") );

// Removes the specified CodeNamespace from the collection.
CodeNamespace namespace_ = new CodeNamespace("TestNamespace");
collection.Remove( namespace_ );

// Removes the CodeNamespace at index 0.
collection.RemoveAt(0);