Add project files.

Gready_Poang.ViewModelLayer/ViewModelClasses/ParticipantViewModel.cs

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+using Common.Library;
+using GreadyPoang.EntityLayer;
+using GreadyPoang.Services;
+using System.Collections.ObjectModel;
+
+
+namespace GreadyPoang.ViewModelLayer;
+
+public class ParticipantViewModel : ViewModelBase
+{
+    #region Constructors
+    public ParticipantViewModel() : base()
+    {
+
+    }
+
+    public ParticipantViewModel(
+        IRepository<Participant> repo,
+        IMethodSharingService<Participant> sharingService,
+        AppShellViewModel appShell,
+        IObjectMessageService objectMessage) : base()
+    {
+        _Repository = repo;
+        _sharingService = sharingService;
+        _appShell = appShell;
+        _objectMessage = objectMessage;
+    }
+
+    #endregion
+
+    #region Private Variables
+    private Participant? _ParticipantObject = new();
+    private ObservableCollection<Participant> _ParticipantList = new();
+    private readonly IRepository<Participant>? _Repository;
+    private readonly IMethodSharingService<Participant> _sharingService;
+    private readonly AppShellViewModel _appShell;
+    private readonly IObjectMessageService _objectMessage;
+    #endregion
+
+    #region public Properties
+
+    public Participant? ParticipantObject
+    {
+        get { return _ParticipantObject; }
+        set
+        {
+            _ParticipantObject = value;
+            RaisePropertyChanged(nameof(ParticipantObject));
+        }
+    }
+
+    public ObservableCollection<Participant> ParticipantList
+    {
+        get { return _ParticipantList; }
+        set
+        {
+            _ParticipantList = value;
+            RaisePropertyChanged(nameof(ParticipantList));
+        }
+    }
+
+    #endregion
+
+    #region Get Method
+    public ObservableCollection<Participant> Get()
+    {
+        if (_appShell.RoundRunningVisible == false)
+        {
+            _objectMessage.Delivered = true;
+        }
+        ParticipantList = _sharingService.Get();
+        return ParticipantList;
+    }
+
+
+
+    #endregion
+
+    #region Get(id) Method
+    public Participant? Get(int id)
+    {
+        try
+        {
+            ParticipantObject = _Repository?.Get(id).GetAwaiter().GetResult();
+        }
+        catch (Exception ex)
+        {
+            System.Diagnostics.Debug.WriteLine($"Error in Get method: {ex.Message}");
+        }
+
+        return ParticipantObject;
+    }
+    public virtual bool Save()
+    {
+        if (_Repository == null || ParticipantObject == null)
+        {
+            return false;
+        }
+        var tmpTask = _Repository.Save(ParticipantObject);
+        int tmp = tmpTask.GetAwaiter().GetResult();
+        if (tmp != -1)
+        {
+            ParticipantObject = new Participant();
+            this.Get();
+        }
+        return tmp != -1;
+    }
+    #endregion
+}