代码更改和源代码背景. [英] Code changing and themeresource background.

问题描述

你好

我将meresources作为主题资源在我的应用程序中.我有几个themeresourcesX.xaml(x = 1,2,3,4etc)每个都包含其他样式.
我应该如何编程按钮，才能在App中更改代码. xaml.vb:

I use themeresources as a resources of my themes in my application. I have several themeresourcesX.xaml (x=1,2,3,4etc) Each contains other styles.

How should I program button, to change code in App.xaml.vb:

Dim source As String = [String].Format("/Exercises;component/CustomTheme/ThemeResources.xaml")

至

  Dim source As String = [String].Format("/Exercises;component/CustomTheme/ThemeResources2.xaml")

按钮将放置在Settings.xaml页中.
是否可以在一页中使用代码来更改代码第二页?

Button will be placed in Settings.xaml page.
Is that possible to use code in one page that changes code of the second page?

还有一个问题.

我想将图像设置为themeresouce.xaml ex的背景. Themeresource1.xaml使用image1.jpg作为背景. Themeresource2.xaml使用image2.jpg作为背景.我知道我可以更改颜色，但是我不确定这些图像.

I would like to set a image as a background of themeresouce.xaml ex. Themeresource1.xaml uses image1.jpg as a background. Themeresource2.xaml uses image2.jpg as a background. I know I can change colors, but I'm not sure about the images.

这是更改颜色背景的方法:

It is the way to change background for color: 

<Color x:Key="PhoneBackgroundColor">#FFD81F1F</Color>

但我不想设置颜色，而是设置图像.

推荐答案

关于更改图像，可以使用几种方法:

Regarding changing the image, several approaches can be used:

1.单独的样式(尽管这可能会产生一些代码膨胀，使维护更加困难)
2.将两种资源都具有一种风格，可见性与主题的可见性相关( http://msdn.microsoft.com/zh-cn/library/ff769552(v = vs.92).aspx#BKMK_ThemeVisibilityAndOpacity )
3.对于通用控件("ImageButton")，请将转换器用于ImageSource

1. Separate styles (though this may produce some code bloat making maintenance more difficult)
2. Have both resources in one style, with visibility bound to theme's visibility (http://msdn.microsoft.com/en-us/library/ff769552(v=vs.92).aspx#BKMK_ThemeVisibilityAndOpacity)
3. For generic controls ("ImageButton") use a converter for the ImageSource

(3)的一种变体是将图像URI放入资源字典中，并在启动时根据主题在运行时对其进行更新.像这样:

A variation on (3) is to put the image URI into a resource dictionary and update that at runtime based on the theme at startup. Like this:

<Style>
...
<Image Source="{StaticResource MyImageUri}"
...
</Style>


this.Resources.Remove("MyImageUri");
if ( (Visibility)this.Resources["PhoneDarkThemeVisibility"] == Visibility.Visible)
{
    this.Resources.Add("MyImageUri", "/Images/dark.png");
}
else
{
    this.Resources.Add("MyImageUri", "/Images/light.png");
}

可以找到有关常规主题管理的更多资源

More resources regarding general theme management can be found here.

希望这会有所帮助，
标记

Hope this helps,
Mark

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