Dockpane with listed files: drag&drop method to add files to map does not work. where's the issue?

nadja — Thu, 07 Sep 2023 06:31:57 GMT

Hi - I'm new to this SDK and C#. I'm trying to code a dockpane which lists all rasters of a given folder. this works. now I would like to add the listed rasters with drag&drop (or right-click - add) to the current map. unfortunately I don't get it to work. it doesn't throw any errors, so I have no clue what's missing... can someone help me please?

here my xaml:

here my xaml.cs:

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; using System.Collections.ObjectModel; using System.IO; using ArcGIS.Desktop.Framework; using ArcGIS.Desktop.Framework.Contracts; namespace dockpane_parcs { /// <summary> /// Interaction logic for Dockpane1View.xaml /// </summary> public partial class Dockpane1View : UserControl { private ObservableCollection<string> fileNames; public Dockpane1View() { InitializeComponent(); fileNames = new ObservableCollection<string>(); FileListView.ItemsSource = fileNames; FileListView.Drop += FileListView_Drop; } private void OnRefreshButtonClicked(object sender, RoutedEventArgs e) { // Define the list of allowed file extensions string[] allowedExtensions = { ".tif", ".TIF", ".tiff", ".TIFF" }; // Update the list of files in a folder string folderPath = @"C:\XXXX\YYYYY"; // Replace with your folder path try { // Get a list of files with the allowed extensions from the folder var files = Directory.GetFiles(folderPath) .Where(file => allowedExtensions.Contains(System.IO.Path.GetExtension(file))) .ToList(); fileNames.Clear(); foreach (string file in files) { fileNames.Add(System.IO.Path.GetFileName(file)); } } catch (Exception ex) { MessageBox.Show($"Error: {ex.Message}"); } } private void FileListView_Drop(object sender, DragEventArgs e) { if (e.Data.GetDataPresent(DataFormats.FileDrop)) { // Get the dropped files as an array of strings string[] droppedFiles = (string[])e.Data.GetData(DataFormats.FileDrop); // Filter for allowed file extensions string[] allowedExtensions = { ".tif", ".TIF", ".tiff", ".TIFF" }; var validFiles = droppedFiles.Where(file => allowedExtensions.Contains(System.IO.Path.GetExtension(file))); // Add the valid files to the ObservableCollection foreach (string file in validFiles) { fileNames.Add(System.IO.Path.GetFileName(file)); } } } private void FileListView_SelectionChanged(object sender, SelectionChangedEventArgs e) { } } }

Re: Dockpane with listed files: drag&drop method to add files to map does not work. where's the issue?

BerendVeldkamp — Thu, 07 Sep 2023 06:40:46 GMT

Could you be a bit more specific about what exactly does not work? For instance, is the Drop event called at all?

That said, I think you need to initiate drag-drop in the MouseMove event first. See here for an example (it is for .NET Framework, but Core will probably be very similar)

Re: Dockpane with listed files: drag&drop method to add files to map does not work. where's the issue?

nadja — Thu, 07 Sep 2023 06:52:48 GMT

Thank you for your quick response. Honestly, I'm not sure. I don't see the mouse change from the arrow to the forbidden-sign or the arrow with the square. So I guess it's not called?

thanks for the hint with the MouseMove, but I don't get what exactly should I do with that?

Re: Dockpane with listed files: drag&drop method to add files to map does not work. where's the issue?

BerendVeldkamp — Thu, 07 Sep 2023 06:56:36 GMT

Did you read the article I linked to? It will tell you exactly what to do

topic Re: Dockpane with listed files: drag&drop method to add files to map does not work. where's the issue? in .NET Maps SDK Questions

Dockpane with listed files: drag&drop method to add files to map does not work. where's the issue?

Re: Dockpane with listed files: drag&drop method to add files to map does not work. where's the issue?

Re: Dockpane with listed files: drag&drop method to add files to map does not work. where's the issue?

Re: Dockpane with listed files: drag&drop method to add files to map does not work. where's the issue?