blocks|key|877982|text|这里有一篇文章将带你一步步完成它：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|877983|http://svetoslavsavov.blogspot.com/2009/07/switching-wpf-interface-themes-at.html|offset|length|877984|基本上，您需要从资源字典中删除“旧”主题，然后合并到新的主题中。上面的文章向您展示了如何使此更改变得非常简单。|877985|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|29|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@$D|Q|E|R|1|S]]|A|$]]|$1|F|3|G|5|6|7|T|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|U|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|C]]]]

Here is an article that will walk you through it:

<a href="http://svetoslavsavov.blogspot.com/2009/07/switching-wpf-interface-themes-at.html">http://svetoslavsavov.blogspot.com/2009/07/switching-wpf-interface-themes-at.html</a>

Basically you need to remove the "old" theme from the resource dictionary and then merge in the new one. The above article shows you how to make this change very simple.

blocks|key|660949|text|我正在使用以下命令在运行时设置主题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|660950|Application.Current.Resources.Source+=+new+Uri("/Themes/ShinyRed.xaml",+UriKind.RelativeOrAbsolute);|code-block|syntax|javascript|660951|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Im using the following command to set the theme at runtime:

<pre><code>Application.Current.Resources.Source = new Uri("/Themes/ShinyRed.xaml", UriKind.RelativeOrAbsolute);
</code></pre>

blocks|key|878133|text|H.B.的答案不适用于我，我必须这样做(工作，测试)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|878134|Uri+dictUri+=+new+Uri(@"/Resources/Themes/MyTheme.xaml",+UriKind.Relative);
ResourceDictionary+resourceDict+=+Application.LoadComponent(dictUri)+as+ResourceDictionary;
Application.Current.Resources.MergedDictionaries.Clear();
Application.Current.Resources.MergedDictionaries.Add(resourceDict);|code-block|syntax|javascript|878135|为了美化它：|878136|//+Place+in+App.xaml.cs
public+void+ChangeTheme(Uri+uri)
{
++++ResourceDictionary+resourceDict+=+Application.LoadComponent(uri)+as+ResourceDictionary;
++++Application.Current.Resources.MergedDictionaries.Clear();
++++Application.Current.Resources.MergedDictionaries.Add(resourceDict);
}

//+Example+Usage+(anywhere+in+app)
private+void+ThemeRed_Click(object+sender,+RoutedEventArgs+e)
{
++++var+app+=+App.Current+as+App;
++++app.ChangeTheme(new+Uri(@"/Resources/Themes/RedTheme.xaml",+UriKind.Relative));++++++
}|878137|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

H.B.'s answer did not run for me, I had to do this (works, tested):

<pre><code>Uri dictUri = new Uri(@"/Resources/Themes/MyTheme.xaml", UriKind.Relative);
ResourceDictionary resourceDict = Application.LoadComponent(dictUri) as ResourceDictionary;
Application.Current.Resources.MergedDictionaries.Clear();
Application.Current.Resources.MergedDictionaries.Add(resourceDict);
</code></pre>

To pretty it up:

<pre><code>// Place in App.xaml.cs
public void ChangeTheme(Uri uri)
{
 ResourceDictionary resourceDict = Application.LoadComponent(uri) as ResourceDictionary;
 Application.Current.Resources.MergedDictionaries.Clear();
 Application.Current.Resources.MergedDictionaries.Add(resourceDict);
}

// Example Usage (anywhere in app)
private void ThemeRed_Click(object sender, RoutedEventArgs e)
{
 var app = App.Current as App;
 app.ChangeTheme(new Uri(@"/Resources/Themes/RedTheme.xaml", UriKind.Relative)); 
}
</code></pre>

blocks|key|878198|text|App.xaml|type|unstyled|depth|inlineStyleRanges|entityRanges|data|878199|++++<Application.Resources>
++++<ResourceDictionary>
++++++++<ResourceDictionary.MergedDictionaries>
++++++++++++<ResourceDictionary+Source="Themes/Font.xaml"+/>
++++++++++++<ResourceDictionary+Source="Themes/Light.xaml"+/>
++++++++</ResourceDictionary.MergedDictionaries>
++++</ResourceDictionary>
</Application.Resources>|code-block|syntax|javascript|878200|在你的代码中：|878201|>+Application.Current.Resources.MergedDictionaries[1].Source+=+new+Uri("Themes/Dark.xaml",+UriKind.RelativeOrAbsolute);|878202|您可以使用此命令进行检查，以确保没有任何东西生长|878203|Application.Current.Resources.MergedDictionaries.Count.ToString();|offset|length|style|CODE|878204|entityMap^0|0|0|0|0|0|0|1U|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|Y|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|Z|8|@$O|10|P|11|Q|R]]|9|@]|A|$]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

App.xaml

<pre><code> &lt;Application.Resources&gt;
 &lt;ResourceDictionary&gt;
 &lt;ResourceDictionary.MergedDictionaries&gt;
 &lt;ResourceDictionary Source="Themes/Font.xaml" /&gt;
 &lt;ResourceDictionary Source="Themes/Light.xaml" /&gt;
 &lt;/ResourceDictionary.MergedDictionaries&gt;
 &lt;/ResourceDictionary&gt;
&lt;/Application.Resources&gt;
</code></pre>

In your code:

<pre><code>&gt; Application.Current.Resources.MergedDictionaries[1].Source = new Uri("Themes/Dark.xaml", UriKind.RelativeOrAbsolute);
</code></pre>

you can check with this to be sure nothing grow

<code>Application.Current.Resources.MergedDictionaries.Count.ToString();</code>

I have a WPF application with a theme (ShinyRed.xaml) and I want to have a button that when clicked changes the theme to ShinyBlue.xaml

I load in the theme initially in App.xaml:

<pre><code>&lt;Application.Resources&gt;
 &lt;ResourceDictionary Source="/Themes/ShinyBlue.xaml"/&gt;
&lt;/Application.Resources&gt;
</code></pre>

How might I do this?

Change theme at runtime

我有一个带有主题(ShinyRed.xaml)的WPF应用程序，我想要有一个按钮，当单击该按钮时会将主题更改为ShinyBlue.xaml我最初在App.xaml中加载主题：<Application.Resources> <ResourceDictionary Source="/Themes/ShinyBlue....

问在运行时更改主题
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