绑定到资源文本文件 [英] Bind to resource text file

问题描述

我想将一个文本块绑定到作为资源编译的文本文件。有没有办法绑定它像一个图像与源属性和一个包uri？

 < Image Source =pack ：// application：,,, / Properties / .../> 
  

解决方案

嗯，你当然无法做到这一点同样的方式。如果您尝试这样做：

 < TextBox Text =pack：// application：,,, / Properties / ... /> 
  

...它只显示包uri作为文本 - 不是你想要的。 >

一个可能的解决方案是创建自己的 MarkupExtension 。例如：

  public class TextExtension：MarkupExtension 
 {
 private readonly string fileName; 
 
 public TextExtension（string fileName）
 {
 this.fileName = fileName; 
} 
 
公共覆盖对象ProvideValue（IServiceProvider serviceProvider）
 {
 //错误处理省略
 var uri = new Uri（pack：//应用程序：,,, /+ fileName）; 
使用（var stream = Application.GetResourceStream（uri）.Stream）
 {
 using（StreamReader reader = new StreamReader（stream，Encoding.UTF8））
 {
 return reader.ReadToEnd（）; 
} 
} 
} 
} 
  

来自XAML：

 < Window 
x：Class =WPF.MainWindow
 xmlns =http ：//schemas.microsoft.com/winfx/2006/xaml/presentation
 xmlns：x =http://schemas.microsoft.com/winfx/2006/xaml
 xmlns：wpf = clr-namespace：WPF> 
< TextBlock Text ={wpf：Text'Assets / Data.txt'}/> 
< / Window> 
  

当然，假定命名的文本文件是一个资源：

进一步阅读：

• 标记XAML概述的扩展


• MarkupExtension Class

I want to bind to a text block to a text file which is compiled as a resource. Is there a way to bind it like a image with the source property and a pack uri?

<Image Source="pack://application:,,,/Properties/..."/>

解决方案

Well, you certainly can't do it exactly the same way. If you try this:

<TextBox Text="pack://application:,,,/Properties/..."/>

...it just displays the pack uri as text -- not what you want.

One possible solution is to create your own MarkupExtension. For example:

public class TextExtension : MarkupExtension
{
    private readonly string fileName;

    public TextExtension(string fileName)
    {
        this.fileName = fileName;
    }

    public override object ProvideValue(IServiceProvider serviceProvider)
    {
        // Error handling omitted
        var uri = new Uri("pack://application:,,,/" + fileName);
        using (var stream = Application.GetResourceStream(uri).Stream)
        {
            using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
            {
                return reader.ReadToEnd();
            }
        }
    }
}

Usage from XAML:

<Window
    x:Class="WPF.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:wpf="clr-namespace:WPF">
    <TextBlock Text="{wpf:Text 'Assets/Data.txt'}" />
</Window>

Assuming, of course, that the named text file is a resource:

Further reading:

• Markup Extensions for XAML Overview
• MarkupExtension Class

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