Hi Yujin Wu,
Sorry for the delay.
To remove or rename the Caption text, please refer the below provided
code (you can also refer the dashboard samples for this from the installed location-<Installed
Location>\Syncfusion\EssentialStudio\12.2.0.36\Windows\Grid.Grouping.Windows\Samples) and let us know if you have any further concerns.
Code Snippet:
//to remove the caption text.
this.gridGroupingControl1.TopLevelGroupOptions.ShowCaption
= false;
//to rename the caption text.
this.gridGroupingControl1.TopLevelGroupOptions.CaptionText
= "XYZ";
Thanks & Regards,
AL.Solai.