This event is fired when an invalid value has been entered into the DateChooser.
This event will be fired for 3 distinct cases. The first case would be a date entered that is non in the range of MinDate - MaxDate values set for the control. The second case would be when a null value is entered, but AllowNull is set to false. The last case would be an improperly formatted date string. This could occur of the month "13" was entered, etc.
It can be the name of implemented function or explicit javascript statement(s). If the name of function is used, then that event handler may contain 3 parameters.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2