Fix bug

Tools/AlarmInfoServerSim/Views/WorkArea.xaml

@@ -42,7 +42,7 @@
             <Button Content="Send" Command="{Binding SendInfoCommand}" Margin="20,20,20,20" Width="120" />
         </StackPanel>
         <StackPanel Grid.Column="1" Orientation="Vertical" Margin="5,10,5,10">
-            <ListView ItemsSource="{Binding ReceivingTime}" Margin="5,20,5,0"></ListView>
+            <ListView MaxHeight="280" ItemsSource="{Binding ReceivingTime}" Margin="5,10,5,10"></ListView>
         </StackPanel>
         
     </Grid>