Reset ArcGISDynamicMapServiceLayer Layers to Initial Visibility

chuckyboy81070

Is there an easy way to reset the Layers in a ArcGISDynamicMapServiceLayer to their initial Visibility state?  I would like for a button in the application to perform a map reset (zoom to initial extent - which it currently does already - and reset all layer visibility states).  That is, to their default visibility as defined in the MapService.

Lance

JustinCornell

Here is a sample (sorry c# not vb.net) of what I do to get around this bug.  It takes into account nested parent layers and uses the outermost parents' visibility.  Hope this helps.

var ids = new List<int>();
var parentLayers = _dmsl.Layers.Where(x => x.SubLayerIds != null).ToArray();
foreach (var l in _dmsl.Layers)
{
    if (parentLayers.Contains(l) && l.DefaultVisibility)
    {
        ids.Add(l.ID);
    }
    else
    {
        //find the parent of the child layer
        var pl = parentLayers.Where(x => x.SubLayerIds.Contains(x.ID)).FirstOrDefault();

        //iterate through parent layers until we reached the outermost parent
        while (parentLayers.Contains(pl))
        {
            var tempPl = parentLayers.Where(x => x.SubLayerIds.Contains(pl.ID)).FirstOrDefault();
            if (tempPl == null)
                break;
            else
                pl = tempPl;
        }

        //determine if the layer should be visible
        if (pl != null)
        {
            if (pl.DefaultVisibility && l.DefaultVisibility)
                ids.Add(l.ID);
        }
    }
}