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

// Adds a CodeTypeReference to the collection.
collection.Add( new CodeTypeReference(typeof(bool)) );

// Adds an array of CodeTypeReference objects to the collection.
CodeTypeReference[] references = { new CodeTypeReference(typeof(bool)), new CodeTypeReference(typeof(bool)) };
collection.AddRange( references );

// Adds a collection of CodeTypeReference objects to the collection.
CodeTypeReferenceCollection referencesCollection = new CodeTypeReferenceCollection();
referencesCollection.Add( new CodeTypeReference(typeof(bool)) );
referencesCollection.Add( new CodeTypeReference(typeof(bool)) );
collection.AddRange( referencesCollection );

// Tests for the presence of a CodeTypeReference in the 
// collection, and retrieves its index if it is found.
CodeTypeReference testReference = new CodeTypeReference(typeof(bool));
int itemIndex = -1;
if( collection.Contains( testReference ) )
    itemIndex = collection.IndexOf( testReference );

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

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

// Inserts a CodeTypeReference at index 0 of the collection.
collection.Insert( 0, new CodeTypeReference(typeof(bool)) );

// Removes the specified CodeTypeReference from the collection.
CodeTypeReference reference = new CodeTypeReference(typeof(bool));
collection.Remove( reference );

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