在 configSource 中使用外部 .config 文件会产生错误 [英] Using an external .config file in configSource produces error

问题描述

我正在研究如何使用配置管理器为 C# 中的 WPF 应用程序读取/写入 App.config 文件中的自定义部分.我阅读了这篇关于 .NET 2.0 Configuration Demystified 的优秀文章，它帮助了我很多使用配置文件.这是我编写的初始 App.config 文件，它运行良好.

I was playing around with how to use the Configuration Manager to read/write custom sections in the App.config file for a WPF application in C#. I read this excellent article on .NET 2.0 Configuration Demystified and it helped me a lot in using the config files. Here is the initial App.config file which I wrote and it works fine.

App.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="example" type="CustomConfig.ExampleSection, CustomConfig" />
  </configSections>
  <example version="A sample string value." />
  <appSettings>
    <add key="version_string" value="1.01" />
  </appSettings>
</configuration>

但是当我更改 App.config 文件时，我的自定义部分将从 configSource 中提到的外部配置文件中读取，Visual Studio 给我一个错误

But when I changed the App.config file in such a way that my custom section will be read from an external config file mentioned in configSource, Visual Studio gives me an error

configSource 文件的格式必须是包含名称的元素部分.

The format of a configSource file must be an element containing the name of the section.

这里是 App.config 和 example.config 文件

Here are the App.config and example.config files

更改了 App.config

Changed App.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="example" type="CustomConfig.ExampleSection, CustomConfig" />
  </configSections>
  <example configSource="example.config" />
  <appSettings>
    <add key="version_string" value="1.01" />
  </appSettings>
</configuration>

example.config

example.config

<?xml version="1.0"?>
<example>
    <add key="version" value="blahblah" />
</example>

推荐答案

Visual Studio 的编辑器/智能感知有一个缺点，它会抱怨 configSource= 属性 - 但它绝对合法，而且它确实有效；我每天都在各种生产系统中使用它.

Visual Studio's editor/intellisense has a shortcoming in that it complains about the configSource= attribute - but it is absolutely legal, and it does work; I use it every day, in various production systems.

我的建议:试试吧！:-) 运行代码 - 我很确定它会工作(你的配置对我来说看起来不错).

My recommendation: just try it! :-) Run the code - I'm pretty sure it will work (your configs look OK to me).

更新: 好的 - 看来您完全改变了 <example> 标签的样式.在您原来的 app.config 中，您有:

Update: OK - well it seems you're totally changing the style of the <example> tag. In your original app.config you have:

<example version="A sample string value." />

当然，您的外部化example.config 必须包含相同的值和相同 结构:

So of course, your externalized example.config must contain the same values and the same structure:

<?xml version="1.0"?>
<example version="A sample string value." />

你能试试这个 example.config 吗??

Can you try with this example.config ??

这篇关于在 configSource 中使用外部 .config 文件会产生错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！