Modify GroupHeaderRow Behavior

[David]

I'm trying to modify the default behavior for expanding and contracting groups in the grid. End users (gotta love them) are complaining that it's too easy to inadvertently hide or show a group by clicking anywhere in the GroupHeaderRow. They want the group to be expanded or contracted based on clicking the glyph arrow on the far left of the GroupHeaderRow. I know I'm going to need to edit the Control Template, but just wondering if I could save some time by asking for specifics on what needs to be edited.

Thanks all.

[Dilyan Traykov]

Hello David,

The changes you need to make really depend on the specific theme you're using. For example, if you're using the Office_Black theme, you can simply remove the IsChecked binding of the HeaderButton ToggleButton. In addition, you may want to replace the IconOuterBorder element with a ToggleButton and copy the IsChecked binding from the HeaderButton along with its GroupHeaderRowToggleButtonStyle.

For your convenience, I'm attaching a small sample project with the aforementioned changes for the Office_Black theme.

Please note once more that If you're using a different theme, the changes you will need to apply may differ. If you require any assistance in the process, please specify which template you're using and I willl gladly help you out further.

Regards,
Dilyan Traykov
Progress Telerik