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Using the information provided on http://help.arcgis.com/en/sdk/10.0/arcobjects_net/conceptualhelp/index.html#/d/00010000035w000000.htm I've been able to set map levels on my ISymbol objects, but unsure if it's working how I expect. If I'm not in 'Advanced View' (layer properties -> Symbology -> Advanced -> Symbol Levels -> and clicked 'Switch to Advanced View') I don't know for sure if the values are set properly since if I switch from default to advanced the values get reset from 0-N. There seems to be some flag that gets set when you toggle from default to advanced, and I need to set that for my users to be able to know what values were set and/or not accidentally reset the values. Anyone have an idea on what toggles the default/advanced view through ArcObjects? The documentation states default view's join and merge '... are implemented behind the scenes using symbol level objects and interfaces', so there must be a way?

Mike
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  • did you try [IMap.UseSymbolLevels](http://help.arcgis.com/en/sdk/10.0/arcobjects_net/componenthelp/index.html#/UseSymbolLevels_Property/001200000mmn000000/)? – Kirk Kuykendall Nov 18 '17 at 23:02
  • Yeah I had set that to true. I had to tell the users to manually make sure the view was switched from default to advanced before continuing with the script to get around the issue. – Mike Nov 20 '17 at 01:30

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