App crashes randomly with (0xc0000005) 'Access violation'
Hello,
We are developing an app with ArcGIS Runtime .NET 100.0.0, that offers interaction with offline maps.
In general we are using the MVVM Model. The MapView.Map binds to a ViewModel.class Map Property CurrentMap. This class also contains a Map Property OfflineMap, which holds reference to a corresponding Map with offline-content .
During initial loading (with some async stuff in previous steps), the (offline) Layers are attached to the OfflineMap Map and after awaiting OfflineMap.LoadAsync(); the Property CurrentMap is assigned to OfflineMap.
Our problem is that the app crashes randomly at the line
this.ProjectManagerViewModelInstance.CurrentMap = this.ProjectManagerViewModelInstance.OfflineMap;
with an exception we cannot handle.The output window shows:
[…MyApp...]WPF.vshost.exe' has exited with code -1073741819 (0xc0000005) 'Access violation'.
public async Task LoadProjectWithTaskSampleAsync(
object param)
{
try
{
#region checkProject
// our "progressbar"
this.ToogleReporter("CheckProject",true);
//read project information from parameter
var pi = await this.ProjectManagerViewModelInstance.InitConnectionInformationAsync(param);
if (pi == null)
{
Log.Warn(" ... ");
this.ToogleReporter("CheckProject",false);
return;
}
this.ToogleReporter("CheckProject",false);
#endregion checkProject
this.ToogleReporter("LoadProject", true);
//MAP CREATION AND ASSIGN TO OFFLINE MAP PROPERTY (and other stuff like processing layer infos ...)
await this.ProjectManagerViewModelInstance.LoadProjectAsync(pi);
// check if all information could be loaded properly
if (await this.TryToOpenProjectAsync(pi))
{
this.ToogleReporter("LoadProject", false);
Log.Error("...");
return;
}
// Check if offline map has layers
var offlineMapAllLayers = this.ProjectManagerViewModelInstance?.OfflineMap?.AllLayers;
if (offlineMapAllLayers != null && offlineMapAllLayers.Any())
{
Log.Debug("Await call OfflineMap.LoadAsync()");
await this.ProjectManagerViewModelInstance.OfflineMap.LoadAsync();
this.ProjectManagerViewModelInstance.CurrentMap = this.ProjectManagerViewModelInstance.OfflineMap;
}
IsLoadingProject = false;
}
catch (Exception e)
{
Log.Error("Loading Project Failed. Abort! ",e);
}
finally
{
this.ToogleReporter("LoadProject", false);
this.EndOfLoadingProject();
}
}
The offline map contains 1 vtpk (52 MB), 1 tpk (15 GB) and 2 mmpks(85 MB and 3 MB). The problem seems to occur only on offline maps with *.mmpks (but still randomly).
Can you help us? I attach the memory dumps, maybe it helps.
Thank you
We are using:
Microsoft Visual Studio Professional 2015
Version 14.0.25421.03 Update 3
Microsoft .NET Framework
Version 4.6.01586
Installed Version: Professional
Visual C# 2015 00322-40000-00000-AA460
Microsoft Visual C# 2015
ArcGIS Runtime SDK for .NET 100.0.0
Microsoft Windows 10 Enterprise
