1. 下载进度无法刷新问题

2. 视图更新方式修改后，视图无法正常显示问题

ViewModel/Send/DownViewModel.cs

@@ -203,6 +203,12 @@ public class DownViewModel : MvcViewModelBase
         FinishedTaskHeader = $"已完成（0）";
     }
 
+    public void RefreshHeader()
+    {
+        RunningTaskHeader = $"下载中（{RunningTasks.Count}）";
+        FinishedTaskHeader = $"已完成（{FinishedTasks.Count}）";
+    }
+
     public void LoadRunningTasks()
     {
         // todo 队列中有几种任务状态 数据库中应该有几种任务状态
@@ -251,8 +257,11 @@ public class DownViewModel : MvcViewModelBase
         var task = new MinioDownloadTask(_minioService, bucketName, objectKey, downDir, size);
         using var client = SqlSugarConfig.GetSqlSugarScope();
         client.Insertable(task).ExecuteCommandIdentityIntoEntity();
-        LoadFinishedTasks();
-        LoadRunningTasks();
+        Application.Current.Dispatcher.Invoke(() =>
+        {
+            RunningTasks.Add(task);
+            RefreshHeader();
+        });
         Console.WriteLine($"文件大小：{size} ");
         _taskQueue.Enqueue(task);
     }
@@ -264,8 +273,14 @@ public class DownViewModel : MvcViewModelBase
         {
             // todo 下载失败3次，停止下载
             await task.StartDownload();
-            LoadRunningTasks();
-            LoadFinishedTasks();
+            Application.Current.Dispatcher.Invoke(() =>
+            {
+                RunningTasks.Remove(task);
+                FinishedTasks.Add(task);
+                RefreshHeader();
+            });
+            //LoadRunningTasks();
+            //LoadFinishedTasks();
             Console.WriteLine($"异步下载完成：{task.FileName}");
         }
         finally