The ClearAll method clears all control's collection as listed bellow. Usually, you can call this method prior to a LoadXML method for a fresh and empty control. 

The ClearAll method clears the following collections:

• TimeScales collection. The TimeScales collection can be accessed through the component's TimeScales property. This is a particular case, when not the entire collection is emptied, as the first element in the collection, is not removed when the ClearAll method is called. In other words, the default TimeScale object being displayed, is not removed, just any additional TimeScale objects. You can use the Clear method of the TimeScales collection to remove all TimeScales objects. As the default, TimeScale object is not being removed or deleted, the TimeZone or any other property that has been changed, will not be changed to its default value.
• Groups collection. The Groups collection can be accessed through the component's Groups property.
• NonworkingPatterns collection.  The NonworkingPatterns collection can be accessed through the component's NonworkingPatterns property.
• NonworkingTimes collection. The NonworkingTimes collection can be accessed through the component's NonworkingTimes property.
• MarkZones collection. The MarkZones collection can be accessed through the component's MarkZones property.
• MarkTimes collection. The MarkTimes collection can be accessed through the component's MarkTimes property.
• ExPictures collection. The ExPictures collection can be accessed through the component's Pictures property.
• Images/Icons list. The Images list contains the icons of the component, and can be accessed through the Images method.
• Events collection. The Events collection can be accessed through the component's Events property.