Error saying "The 'DisplayGroupTree' property cannot be set declaratively"

Public Property DisplayGroupTree As Boolean’ is obsolete.

In this version Crystal Reports can have a parameter panel. I now have to tell crystal reports what will be displayed in the left panel:

• the group tree
• the parameter panel
• nothing

The parameter is ToolPanelView. If you don’t want to show nothing in the left panel:

rptViewer.ToolPanelView = CrystalDecisions.Windows.Forms.ToolPanelViewType.None