https://developers.arcgis.com/net/api-reference/api/net/Esri.ArcGISRuntime/Esri.ArcGISRuntime.Portal.ArcGISPortal.FindItemsAsync.html
Method FindItemsAsync
Use ArcGIS Maps SDK for .NET to build powerful desktop and mobile apps that incorporate capabilities such as mapping, geocoding, routing, and geoprocessing.
method