ActivateItem(Int32,MouseButton) Method
Activates (double-clicks) the specified item in this list by item index.
C# Syntax
void ActivateItem( 
   int itemIndex,
   MouseButton button
)

Parameters

itemIndex
The index of the item to activate.
button
Optional. The mouse button used to activate the item. Possible values: HP.LFT.SDK.MouseButton Default value: MouseButton.Left