The Gantt chart time header rows can be customized using TimeHeaders property.
You can specify the properties of each row:
- GroupBy - the time unit
- Format - the date/time format (see DayPilot.Date.toString() for options)

The default time header levels are defined as follows:
- GroupBy: Month, Format: "MMMM yyyy"
- GroupBy: Day, Format: "d"
JavaScript
See also DayPilot.Gantt.timeHeaders property.
Example
gantt.timeHeaders = [
{ groupBy: "Month", format: "MMMM yyyy" },
{ groupBy: "Day", format: "d"},
{ groupBy: "Hour", format: "h"}
];
ASP.NET WebForms
Example
<DayPilot:DayPilotGantt
ID="DayPilotGantt1"
runat="server"
...
>
<TimeHeaders>
<DayPilot:TimeHeader GroupBy="Month" Format="MMMM yyyy" />
<DayPilot:TimeHeader GroupBy="Day" Format="%d" />
</TimeHeaders>
</DayPilot:DayPilotGantt>
DayPilot