Latest Contributions by RichRuh

Matthew, I assume you are asking about feature classes inside a file geodatabase (a feature layer is a map layer that obtains its data from a feature class).  The best way to check for feature class existence is the following: public bool FeatureClassExists(Geodatabase geodatabase, string featureClassName) {   try   {     FeatureClassDefinition featureClassDefinition = geodatabase.GetDefinition<FeatureClassDefinition(featureClassName);     featureClassDefinition.Dispose();     return true;   }   catch   {     // GetDefinition throws an exception if the definition doesn't exist     return false;   } }‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ To get a list of all of the feature classes in a geodatabase, use Geodatabase.GetDefinitions<FeatureClass>() and iterate through the returned list. I hope this helps, --Rich ... View more

I was confused by this at first too.  The statement return matchField‍ exits the delegate passed to QueuedTask.Run().  You still have to return a value from the GetFieldList() function.   You *could* say return await ArcGIS.Desktop.Framework.ThreadingTasks.QueuedTask.Run(...‍ However my colleague Charles Macleod‌ recommended the following: public static async Task<string> GetFieldList(…   return await ArcGIS.Desktop.Framework.Threading.Tasks.QueuedTask.Run(() => And then await GetFieldList() in the calling function. ... View more