feat: 加入版本检测

DownKyi/ViewModels/Dialogs/NewVersionAvailableDialogViewModel.cs

@@ -0,0 +1,41 @@
+using Avalonia.Controls.Documents;
+using DownKyi.Models;
+using DownKyi.Utils;
+using Prism.Commands;
+using Prism.Services.Dialogs;
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Linq;
+using System.Net.Http;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Tasks;
+
+namespace DownKyi.ViewModels.Dialogs
+{
+    public class NewVersionAvailableDialogViewModel :  BaseDialogViewModel
+    {
+        public const string Tag = "NewVersionAvailable";
+
+        private DelegateCommand? _allowCommand;
+        public DelegateCommand AllowCommand => _allowCommand ??= new DelegateCommand(ExecuteAllowCommand);
+
+        /// <summary>
+        /// 确认事件
+        /// </summary>
+        private void ExecuteAllowCommand()
+        {
+            ButtonResult result = ButtonResult.OK;
+            RaiseRequestClose(new DialogResult(result));
+        }
+
+        public ObservableCollection<Run> Messages { get; set; } = new();
+      
+
+        public override void OnDialogOpened(IDialogParameters parameters)
+        {
+            Messages.AddRange(MarkdownUtil.ConvertMarkdownToRuns(parameters.GetValue<string>("body")));
+        }
+    }
+}