Hi Peter,
Thank you for your update.
As per our grid architecture, you cannot apply the different style to expander for each row. However in general in our latest version you customize the style of the expander. To achieve this requirement, In our latest version, we have exposed the property to customize the expander by using GridDataStyleManager of the GridDataControl.StyleManager like shown below,
Code Snippet[XAML]
And also please note, you cannot bind the image or symbol directly to the PlusPath and MinusPath of the ExpanderAppearence in the GridDataStyleManager. It should be converted to "Path", and then you need to bind the respective path key value to the PlusPath and MinusPath of the ExpanderAppearence in the GridDataStyleManager of the GridDataControl.
Please find our latest version release details below,
Version: v9.2.0.138
Download Link:
http://www.syncfusion.com/support/forums/general/99684/Essential-Studio-2011-Volume-2-Service-Pack-Release-v920138-available-for-download Please run the below sample after installing the above setup file,
sample:<
http://www.syncfusion.com/uploads/redirect.aspx?&team=support&file=CS1883836650.zip >
Note:
Customizing the expander appearance is available from the version v9.2.0.137 and higher version.
Please let us know if you have any queries.
Thanks,
Rajasekar