Latest Contributions by JensBuchta

In the ExcelDropHandler Sample https://github.com/Esri/arcgis-pro-sdk-community-samples/tree/master/Content/ExcelDropHandler , the Readme references "Community Sample data" to be used by the sample. Unfortunately, I can't find this data under resources. Where can I download the sample data? Kind Regards Jens ... View more

I understand that each and every object in the ArcGIS.Core.Data lives on the MCT and therefore has to be used within QueuedTask.Run(..) scope. This makes ArcGIS Pro actually to kind of a single threaded application, as soon as it comes to data access. While looking through the community samples, I stumbled across arcgis-pro-sdk-community-samples/CoreHost/CoreHostSample at master · Esri/arcgis-pro-sdk-community-samples · GitHub  where the Geodatabase-Object is used in the main thread (being an STA Thread), without QueuedTask. This led me to the first question / test program: What happens, if the geodatabase object is instantiated and used in one background thread? Seems to work fine. Second question / test program: What happens, if two geodatabase objects are created in two different (STA-) threads and some work is done on different tables? Seems to work fine. Question is: Is this supported in any way? I do understand, that I will run into problems as soon as I try to pass objects from one thread to another. Updating data might also become critical, as there might be no synchronization context. But if I stay in a read-only context, is it ok to create "my own" geodatabase object in "my own" thread? Kind Regards Jens ... View more

While exploring the SDK, I tried to display the current Map Coordinates in a DockPane, similar to the stock display at the bottom of the map. The idea was to have the pane updated always, regardless of the activated tool (e.g. Select Tool or Editing Tool). The problem is, I haven't found the corrects events, two different approaches failed: 1. Subscribe for Application.Window.MouseMove --> The events aren't raised while the mouse pointer is over the map 2. Override OnToolMouseMove --> Only one tool can be active at a given time I'm not sure, if I have either overseen any existing functionality, if it's a missing API in the SDK or if this kind of functionality is not available on purpose. The latter one could make sense to keep the application responsive, whatever the SDK user implements... Can anybody comment on this, please? Kind Regards Jens ... View more

Currently, I'm testing ExportTileCacheTask.EstimateTileCacheAsync(..). While it's pretty easy to get started with this API, I'm having a hard time to get it really stable and user-friendly. I'm not sure if I'm using it wrong or if anything should be improved behind the scenes. No detail information, if number of tiles > 100.000 Querying the Sampleserver (World_Street_Map (MapServer)) for the whole world with LOD == 9 results in an Exception with the message "Export tile operation failed". If I use the REST API, I do find the reason why, it clearly states: "ERROR 001564: Requested tile count(262144) exceeds the maximum allowed number of tiles(100000) to be exported for service World_Street_Map:MapServer". The only way to get access to this information is to parse all messages of ExportTileCacheJob.Messages after execution finished... which brings to the next problem: await exportTilesTask.EstimateTileCacheSizeAsync(...) immediately returns The method call immediately returns to the execution of the method. At this point, the returned job contains close to zero information. I think the method immediately returns because of "submit and query" pattern implemented at server side. The callback "(result, ex)" does not provide me with job information, so right now I extended my method with a "TaskCompletionSource": var taskCompletionSource = new TaskCompletionSource<EstimateTileCacheSizeResult>(); var job = await exportTilesTask.EstimateTileCacheSizeAsync(options,      (result, ex) =>                     {                         if (ex == null) { taskCompletionSource.SetResult(result); }                         else { taskCompletionSource.SetException(ex); }                     }, .....); await taskCompletionSource.Task; // job finished with all information here This works (for me), but I really don't know if that's a correct / good pattern. It seems like a much of overhead to simply get an estimation. Is this pattern correct? Should it be integrated into the SDK itself? Is there a simpler way to get finished job information? Randomly getting HTTP 500 Errors I do get random 500 errors, raising an exception and exiting the estimation. I'm not absolutely sure, but I think I do get those errors more often, the smaller I set checkInterval argument. Maybe, this is what happens behind the scenes: Runtime SDK asks server to start the job Server returns the job id, while still starting the job Runtime SDK asks (kind of) immediately for the job status Server is still starting the job and replies with 500 Taking the job id of the error message and looking at the state with the Web Browser, the job states "succeeded", so I guess it must be some kind of timing problem (see step 3). Any ideas on that? Kind Regards Jens Buchta ... View more