diff --git a/Wox/MainWindow.xaml b/Wox/MainWindow.xaml
index 554ff7499e..f6405e5607 100644
--- a/Wox/MainWindow.xaml
+++ b/Wox/MainWindow.xaml
@@ -2,6 +2,8 @@
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:wox="clr-namespace:Wox"
         xmlns:vm="clr-namespace:Wox.ViewModel" xmlns:converters="clr-namespace:Wox.Converters"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d"
         Title="Wox"
         Topmost="True"
         Loaded="MainWindow_OnLoaded"
@@ -17,8 +19,7 @@
         Icon="Images\app.png"
         AllowsTransparency="True"
         Visibility="{Binding IsVisible,Converter={converters:VisibilityConverter}}"
-        PreviewKeyDown="Window_PreviewKeyDown"
-        >
+        PreviewKeyDown="Window_PreviewKeyDown" d:DataContext="{d:DesignInstance vm:MainViewModel}">
     <Window.InputBindings>
         <KeyBinding Key="Esc" Command="{Binding EscCommand}"></KeyBinding>
         <KeyBinding Key="Tab" Command="{Binding SelectNextItemCommand}"></KeyBinding>
diff --git a/Wox/ResultPanel.xaml b/Wox/ResultPanel.xaml
index 21c1e890f2..d4e088186e 100644
--- a/Wox/ResultPanel.xaml
+++ b/Wox/ResultPanel.xaml
@@ -5,7 +5,8 @@
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
              xmlns:converters="clr-namespace:Wox.Converters"
-             mc:Ignorable="d" d:DesignWidth="100" d:DesignHeight="100">
+             xmlns:vm ="clr-namespace:Wox.ViewModel"
+             mc:Ignorable="d" d:DesignWidth="100" d:DesignHeight="100" d:DataContext="{d:DesignInstance vm:ResultPanelViewModel}">
     <ListBox x:Name="lbResults" MaxHeight="{Binding MaxHeight}" SelectedItem="{Binding SelectedResult}"
              HorizontalContentAlignment="Stretch" ItemsSource="{Binding Results}" Margin="{Binding Margin}"
              Style="{DynamicResource BaseListboxStyle}" SelectionChanged="lbResults_SelectionChanged" Focusable="False"
@@ -13,6 +14,9 @@
              VirtualizingStackPanel.IsVirtualizing="True" VirtualizingStackPanel.VirtualizationMode="Standard">
         <ListBox.ItemTemplate>
             <DataTemplate>
+                <DataTemplate.DataType>
+                    <x:Type TypeName="vm:ResultItemViewModel" />
+                </DataTemplate.DataType>
                 <Button Command="{Binding OpenResultCommand}">
                     <Button.InputBindings>
                         <MouseBinding Command="{Binding OpenResultActionPanelCommand}" MouseAction="RightClick"></MouseBinding>