WPF and Silverlight 学习笔记（十九）：WPF更换主题

如果要做到一个应用程序其基本的内容不变，但改变整个应用程序的外观可以这样做：

对于每一套外观定义一个ResourceDictionary 在应用程序中，动态加载此应用程序（或窗体）的Resource

例如，如下的应用程序，在选择不同的用户时，显示不同的Canvas背景及图片：

主题样式A：

主题样式B：

主题样式C：

主题样式A的ResourceDictionary的XAML文件内容：

1: <ResourceDictionary

2:xmlns="/winfx//xaml/presentation"

3:xmlns:x="/winfx//xaml">

4:<!-- Canvas样式 -->

5:<Style TargetType="Canvas">

6: <Setter Property="Background">

7: <Setter.Value>

8: <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">

9: <GradientStop Color="#FFFCF6F6" Offset="0"/>

10: <GradientStop Color="#FF99" Offset="1"/>

11: </LinearGradientBrush>

12: </Setter.Value>

13: </Setter>

14:</Style>

15: </ResourceDictionary>

样式B、样式C的XAML代码与其类似，在这里省略。

窗体应用程序的XAML及CS代码如下：

1: <Window x:Class="StyleAndTemplete.TheMeDemo"

2:xmlns="/winfx//xaml/presentation"

3:xmlns:x="/winfx//xaml"

4:Title="TheMe Demo" Height="223" Width="319" ResizeMode="NoResize" Loaded="Window_Loaded">

5:<Canvas>

6: <Image Width="150" Height="150"

7:Canvas.Left="129" Canvas.Top="20"

8:x:Name="userImage"/>

9: <TextBlock Width="78" Height="20"

10:Text="Name:" TextWrapping="Wrap"

11:Canvas.Left="12" Canvas.Top="11"/>

12: <ComboBox Width="97" Height="27"

13: IsSynchronizedWithCurrentItem="True"

14: Canvas.Left="12" Canvas.Top="37"

15: x:Name="userName" SelectionChanged="userName_SelectionChanged" />

16:</Canvas>

17: </Window>

1: using System;

2: using System.Windows;

3: using System.Windows.Controls;

4: using System.Windows.Media.Imaging;

5:

6: namespace StyleAndTemplete

7: {

8:/// <summary>

9:/// Interaction logic for TheMeDemo.xaml

10:/// </summary>

11:public partial class TheMeDemo : Window

12:{

13: public TheMeDemo()

14: {

15: InitializeComponent();

16: }

17:

18: private void Window_Loaded(object sender, RoutedEventArgs e)

19: {

20: userName.Items.Add("Patrick");

21: userName.Items.Add("Abbey");

22: userName.Items.Add("Tobey");

23:

24: userName.SelectedIndex = 0;

25: }

26:

27: private void userName_SelectionChanged(object sender, SelectionChangedEventArgs e)

28: {

29: string selectedTitle = userName.SelectedItem.ToString();

30: string imgName = string.Format("/TitleImage/tile_{0}.png", selectedTitle);

31:

32: BitmapImage img = new BitmapImage(

33: new Uri(imgName,UriKind.Relative));

34:

35: userImage.Source = img;

36:

37: string dicName = string.Format(

38: "{0}Resource.xaml", selectedTitle);

39:

40: this.Resources = (ResourceDictionary)(Application.LoadComponent(

41: new Uri(dicName,UriKind.Relative)));

42: }

43:}

44: }

在微软WPF的示例程序中有一个更加复杂的示例：/downloads/folders/wpfsamples/entry5097.aspx

本系列博客索引页

如果觉得《WPF and Silverlight 学习笔记（十九）：WPF更换主题》对你有帮助，请点赞、收藏，并留下你的观点哦！