WIP Windows 10

Dependencies finally installed
Removal of useless code
Big cleanup in XAML styles (override colors the correct way)

Win10App/Views/UserControls/UpdateCredentialsUserControl.xaml.cs

@@ -0,0 +1,87 @@
+using System;
+using System.Collections.Generic;
+using Windows.Storage.AccessCache;
+using Windows.Storage.Pickers;
+using Windows.UI.Xaml;
+using ModernKeePass.Domain.Dtos;
+using ModernKeePass.ViewModels;
+using ModernKeePass.Extensions;
+
+// The User Control item template is documented at https://go.microsoft.com/fwlink/?LinkId=234236
+
+namespace ModernKeePass.Views.UserControls
+{
+    public sealed partial class UpdateCredentialsUserControl
+    {
+        public UpdateCredentialsViewModel ViewModel => Grid.DataContext as UpdateCredentialsViewModel;
+        public string DatabaseFilePath
+        {
+            get => (string)GetValue(DatabaseFilePathProperty);
+            set => SetValue(DatabaseFilePathProperty, value);
+        }
+        public static readonly DependencyProperty DatabaseFilePathProperty =
+            DependencyProperty.Register(
+                "DatabaseFilePath",
+                typeof(string),
+                typeof(CredentialsUserControl),
+                new PropertyMetadata(null, (o, args) => { }));
+
+        public event EventHandler CredentialsUpdated;
+
+        public UpdateCredentialsUserControl()
+        {
+            InitializeComponent();
+        }
+        
+        private async void KeyFileButton_Click(object sender, RoutedEventArgs e)
+        {
+            var picker =
+                new FileOpenPicker
+                {
+                    ViewMode = PickerViewMode.List,
+                    SuggestedStartLocation = PickerLocationId.DocumentsLibrary
+                };
+            picker.FileTypeFilter.Add(".key");
+
+            // Application now has read/write access to the picked file
+            var file = await picker.PickSingleFileAsync();
+            if (file == null) return;
+
+            var token = StorageApplicationPermissions.FutureAccessList.Add(file);
+            ViewModel.KeyFilePath = token;
+        }
+
+        private async void CreateKeyFileButton_Click(object sender, RoutedEventArgs e)
+        {
+            var savePicker = new FileSavePicker
+            {
+                SuggestedStartLocation = PickerLocationId.DocumentsLibrary,
+                SuggestedFileName = "Key"
+            };
+            savePicker.FileTypeChoices.Add("Key file", new List<string> { ".key" });
+
+            var file = await savePicker.PickSaveFileAsync();
+            if (file == null) return;
+
+            var token = StorageApplicationPermissions.FutureAccessList.Add(file);
+            ViewModel.KeyFilePath = token;
+        }
+
+        private async void UpdateButton_OnClick(object sender, RoutedEventArgs e)
+        {
+            //throw new NotImplementedException();
+
+            if (await Dispatcher.RunTaskAsync(async () =>
+            {
+                var fileInfo = new FileInfo
+                {
+                    Path = DatabaseFilePath
+                };
+                return await ViewModel.CreateDatabase(fileInfo);
+            }))
+            {
+                CredentialsUpdated?.Invoke(this, new EventArgs());
+            }
+        }
+    }
+}