An non edit mode is enabled in the control when the EditMode is set to Single. In this case, only one field can enter edit mode and the rest are read only.
Currently, there is no API that allows you to customize the content (that shows the property value) of the read only fields.
Add an API that allows you to customize the read only content. Similar to the EditorTemplate of the PropertyDefinition.
Currently, when RenderMode Flat is enabled, RadPropertyGridd uses a custom navigation behavior. The default framework navigation is available only when RenderMode is Hierarchical.
Currently the only option is to call the Expand/Collapse groups API, which takes noticable time to execute.
By the time being, a custom DataTemplate can be applied only for the EditorTemplate. When the EditMode is Single, a plain TextBlock is used for a readonly PropertyDefinition. With the Default EditMode, if the EditorTemplate is set, it will be displayed, but the user needs to stick to the default behavior provided by the ReadOnlyEditorState property (grayed out and disabled element for its Disabled value, and enabled interaction for the ReadOnly one). Provide an option to directly set a ReadOnlyTemplate for both EditModes.
Expose a boolean property that states whether to save the expanded state of the group and property definitions and the filter descriptor.
Provide a straight-forward option for customers to set their custom tooltip. An example showing how to achieve this now is available at https://github.com/telerik/xaml-sdk/tree/master/PropertyGrid/CustomHyperlinkToolTip