Hi Alexey,
Thanks for your update.
Query#1: Does TreeViewAdv have property for alternate row background?
We have created workaround sample to show demo on how to change the background of alternate row when MultiColumnEnable is true in TreeViewAdv and currently we don’t have direct property to set alternate row background.
Please download the sample from below link.
Link:TreeViewAdvMultiColumnSupportTesting
Query#2: How do I show vertical or|and horizontal grid lines in TreeViewAdv control when MultiColumnEnable="True"?
In our current implementation we don’t have support for horizontal or vertical lines in TreeViewAdv.
Please let us know whether you need any other assistance on this.
Regards,
Venkateshwaran V.R.