support for dynamic switching languages

src/Shared/HandyControlDemo_Shared/UserControl/Basic/ChatBox.xaml

@@ -5,6 +5,7 @@
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
              xmlns:hc="https://handyorg.github.io/handycontrol"
              xmlns:langs="clr-namespace:HandyControlDemo.Properties.Langs"
+             xmlns:ex="clr-namespace:HandyControlDemo.Tools.Extension"
              mc:Ignorable="d" 
              Height="486"
              Effect="{StaticResource EffectShadow5}"
@@ -44,7 +45,7 @@
                         </hc:EventTrigger>
                     </hc:Interaction.Triggers>
                 </TextBox>
-                <Button Grid.Column="1" Visibility="{Binding IsChecked,ElementName=ToggleButtonAudio,Converter={StaticResource Boolean2VisibilityConverter}}" Content="{x:Static langs:Lang.PushToTalk}" HorizontalAlignment="Stretch">
+                <Button Grid.Column="1" Visibility="{Binding IsChecked,ElementName=ToggleButtonAudio,Converter={StaticResource Boolean2VisibilityConverter}}" Content="{ex:Lang Key={x:Static langs:LangKeys.PushToTalk}}" HorizontalAlignment="Stretch">
                     <hc:Interaction.Triggers>
                         <hc:EventTrigger EventName="PreviewMouseLeftButtonDown">
                             <hc:EventToCommand Command="{Binding StartRecordCmd}"/>

src/Shared/HandyControlDemo_Shared/UserControl/Basic/InteractiveDialog.xaml

@@ -2,6 +2,7 @@
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:langs="clr-namespace:HandyControlDemo.Properties.Langs"
+        xmlns:ex="clr-namespace:HandyControlDemo.Tools.Extension"
         xmlns:hc="https://handyorg.github.io/handycontrol"
         CornerRadius="10"
         Width="400"
@@ -10,7 +11,7 @@
         Background="{DynamicResource RegionBrush}">
     <StackPanel VerticalAlignment="Center" Margin="32">
         <TextBlock Style="{StaticResource TextBlockLargeBold}" Text="{Binding Message}"/>
-        <TextBox Margin="0,32,0,0" Style="{StaticResource TextBoxExtend}" Text="{Binding Result,UpdateSourceTrigger=PropertyChanged}" hc:InfoElement.Placeholder="{x:Static langs:Lang.PleaseInput}"/>
-        <Button Width="120" Margin="0,32,0,0" Command="{Binding CloseCmd}" Style="{StaticResource ButtonPrimary}" Content="{x:Static langs:Lang.Ok}"/>
+        <TextBox Margin="0,32,0,0" Style="{StaticResource TextBoxExtend}" Text="{Binding Result,UpdateSourceTrigger=PropertyChanged}" hc:InfoElement.Placeholder="{ex:Lang Key={x:Static langs:LangKeys.PleaseInput}}"/>
+        <Button Width="120" Margin="0,32,0,0" Command="{Binding CloseCmd}" Style="{StaticResource ButtonPrimary}" Content="{ex:Lang Key={x:Static langs:LangKeys.Ok}}"/>
     </StackPanel>
 </Border>

src/Shared/HandyControlDemo_Shared/UserControl/Basic/TextDialog.xaml

@@ -2,13 +2,14 @@
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:langs="clr-namespace:HandyControlDemo.Properties.Langs"
+        xmlns:ex="clr-namespace:HandyControlDemo.Tools.Extension"
         xmlns:hc="https://handyorg.github.io/handycontrol"
         CornerRadius="10"
         Width="400"
         Height="247"
         Background="{DynamicResource RegionBrush}">
     <hc:SimplePanel>
-        <TextBlock Style="{StaticResource TextBlockLargeBold}" Text="{x:Static langs:Lang.PleaseWait}"/>
+        <TextBlock Style="{StaticResource TextBlockLargeBold}" Text="{ex:Lang Key={x:Static langs:LangKeys.PleaseWait}}"/>
         <Button Width="22" Height="22" Command="hc:ControlCommands.Close" Style="{StaticResource ButtonIcon}" Foreground="{DynamicResource PrimaryBrush}" hc:IconElement.Geometry="{StaticResource ErrorGeometry}" Padding="0" HorizontalAlignment="Right" VerticalAlignment="Top" Margin="0,4,4,0"/>    
     </hc:SimplePanel>
 </Border>

src/Shared/HandyControlDemo_Shared/UserControl/Basic/TextDialogWithTimer.xaml

@@ -2,6 +2,7 @@
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:langs="clr-namespace:HandyControlDemo.Properties.Langs"
+        xmlns:ex="clr-namespace:HandyControlDemo.Tools.Extension"
         xmlns:hc="https://handyorg.github.io/handycontrol"
         CornerRadius="10"
         Width="400"
@@ -10,7 +11,7 @@
         Background="{DynamicResource RegionBrush}">
     <hc:SimplePanel>
         <Viewbox Width="80" Height="80">
-            <TextBlock TextWrapping="Wrap" Style="{StaticResource TextBlockLargeBold}" Text="{x:Static langs:Lang.PleaseWait}"/>
+            <TextBlock TextWrapping="Wrap" Style="{StaticResource TextBlockLargeBold}" Text="{ex:Lang Key={x:Static langs:LangKeys.PleaseWait}}"/>
         </Viewbox>
         <Button Name="ButtonClose" Width="22" Height="22" Command="{Binding CloseCmd}" Style="{StaticResource ButtonIcon}" Foreground="{DynamicResource PrimaryBrush}" hc:IconElement.Geometry="{StaticResource ErrorGeometry}" Padding="0" HorizontalAlignment="Right" VerticalAlignment="Top" Margin="0,4,4,0"/>
         <hc:CircleProgressBar Name="ProgressBarTimer" ShowText="False" Width="120" Height="120"/>