ganttObject.reRenderChart(ej.Gantt.ScheduleHeaderType.Day) ---- redraws but looses custom toolbar ?

Question

Added some custom buttons to the toolbar to change the viewing scale, but after the rerenderchart the chart redraws correctly BUT it looses the custom buttons?

attached code (cut and pasted from various online samples)

Help is appreciated.

Attachment: code_e8c75c1d.zip

John Rajaram · Answer

Hi Stuart, 
 
Thank you for contacting Syncfusion support. 
 
We suggest you to change the schedule mode for Gantt control by using “scheduleHeaderSettings” SetModel option. Also this will maintain the CSS for Gantt’s toolbar buttons. Please find the following updated code snippets for your sample.  
 
Code snippets: 
 




 
//... 

if (args === "Week") { 
   //... 
   //ganttObject.model.scheduleHeaderSettings.scheduleHeaderType = ej.Gantt.ScheduleHeaderType.Week; 
   ganttObject.setModel({ "scheduleHeaderSettings": { scheduleHeaderType: ej.Gantt.ScheduleHeaderType.Week } }); 
} 
 
if (args === "Day") { 
    //... 
    //ganttObject.model.scheduleHeaderSettings.scheduleHeaderType = ej.Gantt.ScheduleHeaderType.Day; 
    ganttObject.setModel({ "scheduleHeaderSettings": { scheduleHeaderType: ej.Gantt.ScheduleHeaderType.Day } } ); 
} 
 
if (args === "Month") { 
    //... 
    //ganttObject.model.scheduleHeaderSettings.scheduleHeaderType = ej.Gantt.ScheduleHeaderType.Month; 
    ganttObject.setModel({ "scheduleHeaderSettings": { scheduleHeaderType: ej.Gantt.ScheduleHeaderType.Month } }); 
} 
 
if (args === "Year") { 
    //... 
    //ganttObject.model.scheduleHeaderSettings.scheduleHeaderType = ej.Gantt.ScheduleHeaderType.Year; 
    ganttObject.setModel({ "scheduleHeaderSettings": { scheduleHeaderType: ej.Gantt.ScheduleHeaderType.Year } }); 
} 

 
We have also modified the sample with the updated code snippets. Please find the sample in the following location. 
 
Sample Location: https://jsplayground.syncfusion.com/t1i23nlj 
 
Let us know if you need further assistance on this. 
 
Regards, 
John R

Stuart Collier · Answer

PERFECT !

Bharath Marimuthu · Answer

Hi Stuart, 
 
We are glad that your requirement has been achieved. 
 
Regards, 
Bharath.