.NET Framework 4.6 and 4.5
public event DataTableClearEventHandler TableClearing
The TableClearing event is fired before processing of the Clear operation begins. This event is always fired when the Clear method is invoked, even if the table contains zero rows.
Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0
.NET Framework Client Profile
Supported in: 4, 3.5 SP1
Supported in: 3.0, 2.0, 1.0