https://community.esri.com/t5/net-maps-sdk-questions/is-the-graphiccollection-class-thread-safe/m-p/1485624#M12756 <P>Thank you, this is all very useful.&nbsp;&nbsp;<span class="lia-unicode-emoji" title=":clinking_beer_mugs:">🍻</span></P> Wed, 05 Jun 2024 19:14:13 GMT Mike_Quetel 2024-06-05T19:14:13Z https://community.esri.com/t5/net-maps-sdk-questions/is-the-graphiccollection-class-thread-safe/m-p/1485579#M12754 <P>API docs don't explicitly say, but is the <A href="https://developers.arcgis.com/net/api-reference/api/netwin/Esri.ArcGISRuntime/Esri.ArcGISRuntime.UI.GraphicCollection.html" target="_self">GraphicCollection</A> class thread safe?&nbsp; Use case is that I have a large(ish) number of graphics (25,000 to maybe 100,000)&nbsp; to add to an overlay.&nbsp; Can this task be safely chunked into batches and run in parallel?&nbsp;</P> Wed, 05 Jun 2024 18:14:35 GMT https://community.esri.com/t5/net-maps-sdk-questions/is-the-graphiccollection-class-thread-safe/m-p/1485579#M12754 Mike_Quetel 2024-06-05T18:14:35Z https://community.esri.com/t5/net-maps-sdk-questions/is-the-graphiccollection-class-thread-safe/m-p/1485595#M12755 <P>The GraphicCollection class is indeed thread-safe (synchronized).&nbsp; However, the most efficient way to populate it would be to use AddRange method (optimized to reduce temporary allocations and locking/unlocking/eventing overhead).&nbsp; So, yes, you can absolutely parallelize creation of your Graphic objects -- e.g. using&nbsp;Parallel.ForEach with a partitioner -- but I suggest adding Graphics to the collection in batches of several hundred/thousand rather than individually.</P><P>We actually have a whole guide topic dedicated to Graphic performance, check it out for more tips:&nbsp;<A href="https://developers.arcgis.com/net/programming-patterns/performance-considerations/#graphics" target="_blank">Performance considerations | ArcGIS Maps SDK for .NET | ArcGIS Developers</A></P><P>A couple years ago we also talked about performance for Graphic-heavy apps at DevSummit.&nbsp; You can find a recording of it here:&nbsp;<A href="https://mediaspace.esri.com/playlist/dedicated/250241443/1_jv1v5zry/1_kitmn15d" target="_self">"ArcGIS Runtime SDK for .NET: Building Apps - Part 2"</A>&nbsp;(relevant part starts around the 25-minute mark).</P> Wed, 05 Jun 2024 18:50:29 GMT https://community.esri.com/t5/net-maps-sdk-questions/is-the-graphiccollection-class-thread-safe/m-p/1485595#M12755 MatveiStefarov 2024-06-05T18:50:29Z https://community.esri.com/t5/net-maps-sdk-questions/is-the-graphiccollection-class-thread-safe/m-p/1485624#M12756 <P>Thank you, this is all very useful.&nbsp;&nbsp;<span class="lia-unicode-emoji" title=":clinking_beer_mugs:">🍻</span></P> Wed, 05 Jun 2024 19:14:13 GMT https://community.esri.com/t5/net-maps-sdk-questions/is-the-graphiccollection-class-thread-safe/m-p/1485624#M12756 Mike_Quetel 2024-06-05T19:14:13Z