Add a splitter to resize the main panes

MainWindow.xaml

@@ -73,7 +73,8 @@
         <!--  主内容区域  -->
         <Grid Grid.Row="1">
             <Grid.ColumnDefinitions>
-                <ColumnDefinition Width="*" MinWidth="400" />
+                <ColumnDefinition Width="*" MinWidth="440" />
+                <ColumnDefinition Width="5" />
                 <ColumnDefinition Width="2*" />
             </Grid.ColumnDefinitions>
             <Grid.RowDefinitions>
@@ -175,10 +176,20 @@
                 </Grid>
             </GroupBox>
 
+            <GridSplitter
+                Grid.RowSpan="2"
+                Grid.Column="1"
+                Width="5"
+                HorizontalAlignment="Stretch"
+                VerticalAlignment="Stretch"
+                Background="#FFE0E0E0"
+                ResizeBehavior="PreviousAndNext"
+                ResizeDirection="Columns" />
+
             <!--  基础信息显示  -->
             <GroupBox
                 Grid.Row="0"
-                Grid.Column="1"
+                Grid.Column="2"
                 Header="基础信息">
                 <Grid Margin="1">
                     <Grid.RowDefinitions>
@@ -234,7 +245,7 @@
             <!--  钻带内容显示  -->
             <GroupBox
                 Grid.Row="1"
-                Grid.Column="1"
+                Grid.Column="2"
                 Header="钻带内容">
                 <TextBox
                     Name="DrillTapeTextBox"