diff --git a/ViewModel/QueryViewModel.cs b/ViewModel/QueryViewModel.cs
index 988e960..2539222 100644
--- a/ViewModel/QueryViewModel.cs
+++ b/ViewModel/QueryViewModel.cs
@@ -6,6 +6,7 @@ using System.Collections.ObjectModel;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using System.Windows.Threading;
 
 namespace Audit.ViewModel
 {
@@ -51,8 +52,26 @@ namespace Audit.ViewModel
         /// </summary>
         public QueryViewModel()
         {
+
             dyelots = new DyelotsProvider().Select();
+            DispatcherTimer timer = new DispatcherTimer//初始化循环，每0.5秒调用一次Tick_Event
+            {
+                Interval = TimeSpan.FromSeconds(0.1)
+            };
+            timer.Tick += Tick_Event;
+            timer.Start();
         }
-    }
 
+        int a = 0;//计数器用变量
+        void Tick_Event(object sender, EventArgs e)//Tick_Event周期执行事件
+        {
+
+            if (a == 20)//
+            {
+
+                a = 0;
+            }
+            else a++;
+        }
+    }
 }