Adds a new custom object to the collection. If the item already exists in the collection, its index is returned.

Changes the key associated with the specified element in the lookup dictionary.

Removes all elements from the Collection<(Of <(<'T>)>)>.

(Inherited from C1ObservableKeyedCollection<(Of <(<'TKey, TItem>)>)>.)

Copies the entire Collection<(Of <(<'T>)>)> to a compatible one-dimensional Array, starting at the specified index of the target array.

Returns the list of predefined categories.

Returns an enumerator that iterates through the Collection<(Of <(<'T>)>)>.

Extracts the key from the specified element.

Searches for the specified object and returns the zero-based index of the first occurrence within the entire Collection<(Of <(<'T>)>)>.

Inserts an element into the Collection<(Of <(<'T>)>)> at the specified index.

Overrides default behavior of collection at inserting new items. If specified item already exists in the collection generates an exception.

Restores the collection to its default state.

(Inherited from C1ObservableKeyedCollection<(Of <(<'TKey, TItem>)>)>.)

Removes the element with the specified key from the KeyedCollection<(Of <(<'TKey, TItem>)>)>.

Removes the element at the specified index of the Collection<(Of <(<'T>)>)>.

Overrides base class implementation.

(Inherited from C1ObservableKeyedCollection<(Of <(<'TKey, TItem>)>)>.)

Adds an item to the IList.

Determines whether the IList contains a specific value.

Copies the elements of the ICollection to an Array, starting at a particular Array index.

Returns an enumerator that iterates through a collection.

Determines the index of a specific item in the IList.

Inserts an item into the IList at the specified index.

Removes the first occurrence of a specific object from the IList.