整体调整了功能

FATrace.WPLApp/Views/HelpManualView.xaml

@@ -4,9 +4,97 @@
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
              xmlns:local="clr-namespace:FATrace.WPLApp.Views"
+             xmlns:pdfViewer="clr-namespace:Syncfusion.Windows.PdfViewer;assembly=Syncfusion.PdfViewer.WPF"
+             xmlns:prism="http://prismlibrary.com/"
              mc:Ignorable="d" 
+             prism:ViewModelLocator.AutoWireViewModel="True"
              d:DesignHeight="450" d:DesignWidth="800">
-    <Grid>
-            
+    <UserControl.Resources>
+        <BooleanToVisibilityConverter x:Key="Bool2Vis" />
+    </UserControl.Resources>
+    <Grid Margin="10">
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="*" />
+            <RowDefinition Height="Auto" />
+        </Grid.RowDefinitions>
+
+        <TextBlock
+            Grid.Row="0"
+            Margin="0,0,0,8"
+            FontSize="20"
+            FontWeight="SemiBold"
+            Text="使用手册" />
+
+        <Border
+            Grid.Row="1"
+            Padding="10"
+            Background="#F9F9F9"
+            BorderBrush="#DDDDDD"
+            BorderThickness="1"
+            CornerRadius="4">
+            <Grid>
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="Auto" />
+                    <ColumnDefinition Width="*" />
+                    <ColumnDefinition Width="Auto" />
+                </Grid.ColumnDefinitions>
+
+                <TextBlock
+                    Grid.Column="0"
+                    VerticalAlignment="Center"
+                    Text="PDF：" />
+
+                <ComboBox
+                    Grid.Column="1"
+                    Height="30"
+                    Margin="6,0,10,0"
+                    ItemsSource="{Binding PdfFiles}"
+                    SelectedItem="{Binding SelectedPdf, Mode=TwoWay}" />
+
+                <Button
+                    Grid.Column="2"
+                    Width="90"
+                    Height="30"
+                    Command="{Binding RefreshCommand}">
+                    <StackPanel Orientation="Horizontal">
+                        <TextBlock
+                            Margin="0,0,6,0"
+                            FontFamily="/Assets/Fonts/#iconfont"
+                            FontSize="16"
+                            Text="&#xe952;" />
+                        <TextBlock Text="刷新" />
+                    </StackPanel>
+                </Button>
+            </Grid>
+        </Border>
+
+        <Grid Grid.Row="2" Margin="0,10,0,10">
+            <pdfViewer:PdfViewerControl ItemSource="{Binding PdfFilePath}" />
+            <Border
+                Background="#CCFFFFFF"
+                Visibility="{Binding IsBusy, Converter={StaticResource Bool2Vis}}">
+                <StackPanel HorizontalAlignment="Center" VerticalAlignment="Center">
+                    <TextBlock
+                        HorizontalAlignment="Center"
+                        FontSize="16"
+                        FontWeight="SemiBold"
+                        Text="正在加载..." />
+                </StackPanel>
+            </Border>
+        </Grid>
+
+        <StatusBar Grid.Row="3">
+            <StatusBarItem>
+                <TextBlock Text="状态：" />
+            </StatusBarItem>
+            <StatusBarItem>
+                <TextBlock Text="{Binding StatusText}" />
+            </StatusBarItem>
+            <StatusBarItem HorizontalAlignment="Right">
+                <TextBlock Text="正在处理..." Visibility="{Binding IsBusy, Converter={StaticResource Bool2Vis}}" />
+            </StatusBarItem>
+        </StatusBar>
     </Grid>
 </UserControl>