BootstrapGridViewToolbarItemCollection.Add Method

Name	Parameters	Description
Add()	none	Adds a new toolbar item to the end of the collection and returns the newly created object.
Add(String, String, String)	text, name, iconCssClass	Adds a new item to the collection and specifies the item’s display text, name and associated image.
Add(String, String)	text, name	Adds a new item to the collection and specifies the item’s display text and name.
Add(String)	text	Adds a new item to the collection and specifies the item’s display text.