	Name	Description
	AlwaysFireOnClick	Gets or sets the boolean to fire the click event even if the item is currently selected. The default value is false.
	Caption	Gets or sets the command label as it appears in the ribbon and customize dialog. (Inherited from ArcGIS.Desktop.Framework.Contracts.PlugIn)
	CollectionView	InRibbonGallery's bounded ItemSource. This collection filters out the items whose value of IGalleryItem.IsGroupVisible is false.
	DisabledTooltip	Gets or sets the supplementary text that appears with the `Tooltip` only when the command is disabled. (Inherited from ArcGIS.Desktop.Framework.Contracts.PlugIn)
	Enabled	Gets or sets a boolean to specify whether the control is enabled. (Inherited from ArcGIS.Desktop.Framework.Contracts.PlugIn)
	ItemCollection	Gets the gallery's items.
	ItemCollectionCopy	Gets a copy of the gallery's items which is safe to iterate over from any thead.
	ItemTemplate	Gets or sets the custom item template.
	LargeImage	Gets or sets the large representation of the command, this may be an image or a xaml element. (Inherited from ArcGIS.Desktop.Framework.Contracts.PlugIn)
	LoadingMessage	Gets or sets the message to show while items are loading into collection.
	SelectedIndex	Gets or sets the zero-based index of the selected item.
	SelectedItem	Gets or sets the selected gallery item.
	SmallImage	Gets or sets the small representation of the command, this may be an image or a xaml element. (Inherited from ArcGIS.Desktop.Framework.Contracts.PlugIn)
	Tooltip	Gets or sets a brief description of the command that appears in a small pop-up window when a user pauses the mouse pointer over an element, such as over a Button. (Inherited from ArcGIS.Desktop.Framework.Contracts.PlugIn)
	TooltipHeading	Gets or sets a one or two word label that appears above the tooltip. (Inherited from ArcGIS.Desktop.Framework.Contracts.PlugIn)

	Name	Description
	DefaultItems	Gets or sets default gallery groups or items used to restore the dialog. This is necessary for gallery customization dialog.
	HasFailedToLoadItems	Gets or sets the flag indicating the gallery has not initialized properly.
	ID	Gets the DAML identifier. (Inherited from ArcGIS.Desktop.Framework.Contracts.PlugIn)

	Name	Description
	Add	Adds an item to the collection.
	Clear	Removes all the items from the internal collection.
	CloneItem	This is necessary for gallery customization dialog. It is used to create a new item when adding a new gallery item.
	CopyFrom	Add items from an existing collection.
	Insert	Inserts an element into the collection at the specified index.
	Move	Moves the item at the specified index to a new location in the collection.
	NotifyPropertyChanged	Overloaded. (Inherited from ArcGIS.Desktop.Framework.Contracts.PropertyChangedBase)
	OnClick	Overloaded.
	OnDropDownOpened	Called when the gallery is expanded.
	OnUpdate	Called periodically by the framework once the tool has been created. (Inherited from ArcGIS.Desktop.Framework.Contracts.PlugIn)
	Remove	Removes the first occurrence of a specific object from the collection.
	RemoveAt	Removes the element at the specified index of the collection.
	SetItemCollection	Derived classes can push in an entire collection instead of adding items piecemeal.
	SetProperty	Overloaded. (Inherited from ArcGIS.Desktop.Framework.Contracts.PropertyChangedBase)
	Uninitialize	Called when the gallery is disposed to give the control an opportunity to clean up any resources.

Reference