Merge pull request #99 from egvijayanand/working

Partial Properties - MVVM Toolkit

Author: egvijayanand

README.md

@@ -15,7 +15,7 @@ Made available in the `src\NET_8\` directory:
 |`EmbeddedWindows`|.NET MAUI Page embedded in a Native WinUI 3 App <br /> Refer to this [.NET MAUI - Native Embedding](https://egvijayanand.in/2024/02/29/dotnet-maui-native-embedding/) article for working with this sample|
 |`MapsApp`|.NET MAUI Maps embedded in a Native WinUI 3 App <br /> Refer to this [.NET MAUI Community Toolkit Maps in WinUI 3 App](https://egvijayanand.in/2024/03/07/dotnet-maui-community-toolkit-maps-in-winui-3-app/) article for working with this sample|
 |`ThemedApp`|Sample app for .NET MAUI App Theming <br /> Refer to this [.NET MAUI - App Theming](https://egvijayanand.in/2024/07/03/dotnet-maui-developer-tips-app-theming/) article for further details|
-|`DateCalculator`|<ul><li>MVVM Sample</li><li>Xamarin Forms and .NET MAUI in a single solution</li><li>WPF and WinUI projects to illustrate the reuse of ViewModels across UI frameworks</li><li>WinForms project to illustrate the reuse of ViewModels across non-XAML UI framework too</li><li>Shared business logic as a separate library project</li><li>ViewModels implemented with [CommunityToolkit.Mvvm](https://www.nuget.org/packages/CommunityToolkit.Mvvm) (aka Microsoft MVVM Toolkit) NuGet package</li></ul>|
+|`DateCalculator`|<ul><li>MVVM Sample</li><li>Xamarin Forms and .NET MAUI in a single solution</li><li>WPF and WinUI projects to illustrate the reuse of ViewModels across UI frameworks</li><li>WinForms project to illustrate the reuse of ViewModels across non-XAML UI framework too</li><li>Shared business logic as a separate library project</li><li>ViewModels implemented with [CommunityToolkit.Mvvm](https://www.nuget.org/packages/CommunityToolkit.Mvvm) (aka Microsoft MVVM Toolkit) NuGet package</li><li>Consult the [MVVM - Made Easy](https://egvijayanand.in/category/mvvm/made-easy/) series of articles for guidance on working with this sample solution.</li></ul>|
 |`UnifiedDateCalculator`|<ul><li>Shared class library sample</li><li>UI, ViewModel, Model, and Business logic all from shared project</li><li>Head projects serve as an app container</li><li>Both Xamarin.Forms and .NET MAUI UI definition from a single project - `DateCalculator.UI`</li><li>ViewModels implemented with [CommunityToolkit.Mvvm](https://www.nuget.org/packages/CommunityToolkit.Mvvm) (aka Microsoft MVVM Toolkit) NuGet package</li></ul>|
 
 ### .NET MAUI 9 Samples

src/NET_8/DateCalculator/DateCalculator.Shared/DateCalculator.Shared.csproj

@@ -4,13 +4,13 @@
         <TargetFrameworks>netstandard2.0;net8.0</TargetFrameworks>
 
         <Nullable>enable</Nullable>
-        <LangVersion>latest</LangVersion>
+        <LangVersion>preview</LangVersion>
         <ImplicitUsings>enable</ImplicitUsings>
         <RootNamespace>DateCalculator</RootNamespace>
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="CommunityToolkit.Mvvm" Version="8.*" />
+        <PackageReference Include="CommunityToolkit.Mvvm" Version="8.*-*" />
     </ItemGroup>
 
 </Project>

src/NET_8/DateCalculator/DateCalculator.Shared/ViewModels/DateViewModel.cs

@@ -1,4 +1,5 @@
-using CommunityToolkit.Mvvm.ComponentModel;
+#define FIELDS
+using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Input;
 using DateCalculator.Extensions;
 using DateCalculator.Helpers;
@@ -10,6 +11,7 @@ namespace DateCalculator.ViewModels
 {
     public partial class DateViewModel : BaseViewModel
     {
+#if FIELDS
         [ObservableProperty]
         [NotifyPropertyChangedFor(nameof(StartDate1))]
         //[TypeConverter(typeof(DateTimeOffsetConverter))]
@@ -53,6 +55,51 @@ public partial class DateViewModel : BaseViewModel
 
         [ObservableProperty]
         private bool addMode = true;
+#else
+        [ObservableProperty]
+        [NotifyPropertyChangedFor(nameof(StartDate1))]
+        //[TypeConverter(typeof(DateTimeOffsetConverter))]
+        public partial DateTimeOffset StartDate { get; set; } = DateTime.Today;
+
+        [ObservableProperty]
+        [NotifyPropertyChangedFor(nameof(EndDate1))]
+        //[TypeConverter(typeof(DateTimeOffsetConverter))]
+        public partial DateTimeOffset EndDate { get; set; } = DateTime.Today;
+
+        [ObservableProperty]
+        [NotifyPropertyChangedFor(nameof(DiffModeInverse))]
+        public partial bool DiffMode { get; set; } = true;
+
+        [ObservableProperty]
+        public partial int SelectedYear { get; set; }
+
+        [ObservableProperty]
+        public partial int SelectedMonth { get; set; }
+
+        [ObservableProperty]
+        public partial int SelectedWeek { get; set; }
+
+        [ObservableProperty]
+        public partial int SelectedDay { get; set; }
+
+        [ObservableProperty]
+        public partial string ResultCaption { get; set; } = "Difference";
+
+        [ObservableProperty]
+        public partial string DiffResult { get; set; } = string.Empty;
+
+        [ObservableProperty]
+        public partial string DiffInDays { get; set; } = string.Empty;
+
+        [ObservableProperty]
+        public partial int SelectedOption { get; set; }
+
+        [ObservableProperty]
+        public partial string? SelectedMode { get; set; }
+
+        [ObservableProperty]
+        public partial bool AddMode { get; set; } = true;
+#endif
 
         public DateViewModel()
         {
@@ -88,7 +135,7 @@ public DateTime EndDate1
 
         public bool DiffModeInverse => !DiffMode;
 
-        // While using classic MVVM
+        #region Classic-MVVM
         /*
         public DateTimeOffset StartDate
         {
@@ -189,6 +236,7 @@ public string DiffInDays
 
         public ICommand DiffCommand => new Command(FindTheDate);
         */
+        #endregion
 
         partial void OnDiffModeChanged(bool value)
         {

src/NET_8/DateCalculator/DateCalculator.WinUI/DateCalculator.WinUI.csproj

@@ -15,6 +15,7 @@
         <Nullable>enable</Nullable>
         <LangVersion>latest</LangVersion>
         <ImplicitUsings>enable</ImplicitUsings>
+        <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
         <RootNamespace>DateCalculator.WinUI</RootNamespace>
 
         <!-- App Options -->