added drag drop

MP3joiner.csproj

@@ -5,8 +5,8 @@
     <TargetFramework>net7.0-windows</TargetFramework>
     <Nullable>enable</Nullable>
     <UseWPF>true</UseWPF>
-    <AssemblyVersion>1.0.0.59</AssemblyVersion>
-    <FileVersion>1.0.0.59</FileVersion>
+    <AssemblyVersion>1.0.0.68</AssemblyVersion>
+    <FileVersion>1.0.0.68</FileVersion>
     <ApplicationIcon>logo (1).ico</ApplicationIcon>
     <PackageIcon>logo.png</PackageIcon>
   </PropertyGroup>

MainWindow.xaml

@@ -9,6 +9,7 @@
         TextElement.FontSize="13"
         TextOptions.TextFormattingMode="Ideal"
         TextOptions.TextRenderingMode="Auto"
+
         Background="#0A4185"
         FontFamily="{DynamicResource MaterialDesignFont}">
 
@@ -70,16 +71,25 @@
                     <TextBlock Text="Join Files" Foreground="White"/>
                 </StackPanel>
             </Button>
+            <Button x:Name="btnclearList" Style="{StaticResource MaterialDesignFlatButton}" Foreground="White" Click="btnclearList_Click">
+                <StackPanel Orientation="Horizontal">
+                    <materialDesign:PackIcon Kind="BrushOff" Margin="0,0,5,0" Foreground="White"/>
+                    <TextBlock Text="Clear List" Foreground="White"/>
+                </StackPanel>
+            </Button>
 
         </StackPanel>
 
         <materialDesign:Card Grid.Row="1" Grid.Column="0" Margin="10,10,10,10" Grid.ColumnSpan="3">
             <DataGrid AutoGenerateColumns="False"
-          HeadersVisibility="Column"
-          ItemsSource="{Binding FileList}"
-          dd:DragDrop.IsDragSource="True"
-          dd:DragDrop.IsDropTarget="True"
-          dd:DragDrop.DropHandler="{Binding DropHandler}">
+            HeadersVisibility="Column"
+            AllowDrop="True"
+            Drop="Window_Drop"
+            DragEnter="Window_DragEnter"
+            ItemsSource="{Binding FileList}"
+            dd:DragDrop.IsDragSource="True"
+            dd:DragDrop.IsDropTarget="True"
+            dd:DragDrop.DropHandler="{Binding DropHandler}">
                 <DataGrid.Columns>
                     <DataGridTextColumn Header="Filename" Binding="{Binding FileName, Mode=OneWay}" Width="*"/>
                 </DataGrid.Columns>

MainWindow.xaml.cs

@@ -51,6 +51,84 @@ public MainWindow()
         #endregion Public Constructors
 
         #region Private Methods
+        private void Window_DragEnter(object sender, DragEventArgs e)
+        {
+            if (e.Data.GetDataPresent(DataFormats.FileDrop))
+            {
+                e.Effects = DragDropEffects.Copy; // Show copy cursor
+            }
+            else
+            {
+                e.Effects = DragDropEffects.None; // Show no-entry cursor
+            }
+
+            e.Handled = true;
+        }
+
+        private void Window_Drop(object sender, DragEventArgs e)
+        {
+            // Check if the drop is from an external source (Windows Explorer)
+            if (e.Data.GetDataPresent(DataFormats.FileDrop))
+            {
+                string[] files = (string[])e.Data.GetData(DataFormats.FileDrop);
+                HandleFileDrop(files);
+                e.Handled = true; // Mark the event as handled
+            }
+            else
+            {
+                // If the drop is not from an external source, 
+                // it might be an internal drag-and-drop for reordering.
+                // Do not set e.Handled to true here.
+                // This allows GongSolutions.Wpf.DragDrop to handle internal reordering.
+            }
+        }
+
+
+        private void HandleFileDrop(string[] files)
+        {
+            var viewModel = DataContext as YourViewModel;
+            if (viewModel == null) return;
+            var firstadded = true;
+            // Your existing logic for handling file drops
+            foreach (string file in files)
+            {
+
+                    // Add each file to your file list, for example:
+                    // Assuming 'fileList' is your ObservableCollection<string> that's bound to the UI
+                    if (viewModel.FileList.Any() && viewModel.FileList.All(f => f.FilePath != file) && firstadded == true)
+                    {
+                        // Create a new instance of AddFilesDialog
+                        var dialog = new AddFilesDialog();
+
+                        // Set the main window as the owner of the dialog
+                        dialog.Owner = this;
+
+                        // Show the dialog and wait for the user to close it
+                        dialog.ShowDialog();
+
+                        // Check the result of the dialog
+                        if (dialog.DialogResult == "NewList")
+                        {
+                            viewModel.FileList.Clear(); // Clear the existing list in the view model
+                            firstadded = false;
+                        }
+                        else if (dialog.DialogResult == "Cancel")
+                        {
+                            return; // Cancel the operation and return from the event handler
+                        }
+                    }
+                    viewModel.FileList.Add(new FileInfo { FilePath = file });
+                    firstadded = false;
+
+            }
+        }
+
+
+        private void btnclearList_Click(object sender, RoutedEventArgs e)
+        {
+            var viewModel = DataContext as YourViewModel;
+            viewModel.FileList.Clear();
+        }
 
         // This method is used to animate a progress bar to zero value
         private void AnimateProgressBarToZero()