diff --git a/EX/Exchange.xaml b/EX/Exchange.xaml
index 5c49016..3b89496 100644
--- a/EX/Exchange.xaml
+++ b/EX/Exchange.xaml
@@ -5,6 +5,7 @@
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         xmlns:local="clr-namespace:formula_manage.EX"
         mc:Ignorable="d"
+        DataContext="{Binding Source={StaticResource Locator}, Path=Exchange}"
         Title="Exchange" Height="720" Width="1280" MinHeight="720" MinWidth="1280" Background="#FFE0E0E0">
     <Grid>
         <DataGrid  x:Name="gridLog" Margin="5,5,0,5" HorizontalAlignment="Left" Width="245" HeadersVisibility ="Column" Background="White" BorderBrush="White"
diff --git a/MainWindow.xaml.cs b/MainWindow.xaml.cs
index f49b1db..183ea70 100644
--- a/MainWindow.xaml.cs
+++ b/MainWindow.xaml.cs
@@ -434,8 +434,6 @@ namespace formula_manage
             exchange.ShowDialog();
         }
 
-
-
         private void print(object sender, RoutedEventArgs e)
         {
             Print.IsEnabled = false;
diff --git a/ViewModel/ExchangeViewModel.cs b/ViewModel/ExchangeViewModel.cs
new file mode 100644
index 0000000..371ed57
--- /dev/null
+++ b/ViewModel/ExchangeViewModel.cs
@@ -0,0 +1,37 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Threading;
+
+namespace formula_manage.ViewModel
+{
+    public class ExchangeViewModel : ViewModelBase
+    {
+        public ExchangeViewModel() 
+        {
+            CountDown();
+        }
+
+        public void CountDown()
+        {
+            DispatcherTimer timer = new DispatcherTimer//初始化循环，每0.5秒调用一次Tick_Event
+            {
+                Interval = TimeSpan.FromSeconds(0.5)
+            };
+            timer.Tick += Tick_Event;
+            timer.Start();
+
+            //设置定时器
+            // disTimer.Tick += new EventHandler(DisTimer_Tick);//每一秒执行的方法
+            // disTimer.Interval = new TimeSpan(10000000); //时间间隔为一秒。
+            // disTimer.Start();//计时开始
+        }
+        void Tick_Event(object sender, EventArgs e)//Tick_Event周期执行事件
+        {
+           
+        }
+    }
+
+}
diff --git a/ViewModel/ViewModelLocator.cs b/ViewModel/ViewModelLocator.cs
index 3601cb5..e0a9506 100644
--- a/ViewModel/ViewModelLocator.cs
+++ b/ViewModel/ViewModelLocator.cs
@@ -28,6 +28,7 @@ namespace formula_manage.ViewModel
 
             SimpleIoc.Default.Register<MainWindowViewModel>();
             SimpleIoc.Default.Register<RECIPEViewModel>();
+            SimpleIoc.Default.Register<ExchangeViewModel>();
         }
              
         public MainWindowViewModel Main
@@ -46,5 +47,13 @@ namespace formula_manage.ViewModel
             }
         }
 
+
+        public ExchangeViewModel Exchange
+        {
+            get
+            {
+                return ServiceLocator.Current.GetInstance<ExchangeViewModel>();
+            }
+        }
     }
 }
diff --git a/formula_manage.csproj b/formula_manage.csproj
index d5f0409..9b2898e 100644
--- a/formula_manage.csproj
+++ b/formula_manage.csproj
@@ -271,6 +271,7 @@
     <Compile Include="UserClass\PrintHelper.cs" />
     <Compile Include="UserClass\StrToInt.cs" />
     <Compile Include="UserClass\UserPrint.cs" />
+    <Compile Include="ViewModel\ExchangeViewModel.cs" />
     <Compile Include="ViewModel\RECIPEViewModel.cs" />
     <Compile Include="ViewModel\MainWindowViewModel.cs" />
     <Compile Include="ViewModel\ViewModelLocator.cs" />