HierarchyManager and zooming&scrolling

2 posts, 0 answers
  1. Lauren
    Lauren avatar
    37 posts
    Member since:
    Jan 2010

    Posted 07 Dec 2010 Link to this post


    1. I saw that with the latest dlls, the user can navigate back and forth when using the drill down features.
    Would there be a way to use the HierarchyManager to also navigate back and forth when zooming and scrolling ? For example, after zooming in, i want to go back to my previous zoomed state ?

    2. When using zooming & scrolling, it can happen that the user zooms or scrolls in an area where there is no data. Therefore the No Data Series message is displayed, but the zooming bar disappeared (same if the IsNoDataMessageEnabled = false). Therefore there is no easy way to zoom out or scroll away from this area. 
    Is there anything i could enable/disable so that instead of having a blank chart area, i can still see the empty chart area AND the axis with zoom bar so i can get away ?

    Any help is greatly appreciated.

  2. Evgeni "Zammy" Petrov
    Evgeni "Zammy" Petrov avatar
    168 posts

    Posted 10 Dec 2010 Link to this post

    Hi Lauren,

     1. Currently this is not supported. Hierarchical Manager is specially created for hierarchical data and cannot be used for zooming and scrolling. We understand the need of back and forward functionality in the zooming and scrolling scenario but we cannot commit to any date or implementation as it is still on the drawing board.

    2. You can limit how much it can be zoomed in by setting the min zoom range:

    ZoomScrollSettings zoomSettings = new ZoomScrollSettings();
    zoomSettings.MinZoomRange = 0.01;
    I believe we had that issue (disappearing scrollbar) but our current build seems to be cured of it. Next week we are releasing SP1 for Q3.

    If the SP1 does not fix the issue please do not hesitate to contact us.

    Evgeni "Zammy" Petrov
    the Telerik team
    Browse the videos here>> to help you get started with RadControls for Silverlight
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