ASP.NET的web.config：configSource对文件属性 [英] ASP.NET web.config: configSource vs. file attributes

问题描述

在一个的web.config - 文件在ASP.NET应用程序配置的某些部分，如的appSettings 和是connectionStrings ，支持的属性 文件 和 configSource

什么是使用 文件之间 -attribute和 configSource -attribute？当你应该使用哪个属性，并可以同时使用？

 ＆LT;？XML版本=1.0＆GT？;
＆LT;结构＆gt;
  ＆LT;文件的appSettings =AppSettings.config＆GT;
  ＆LT; /的appSettings＆GT;
  ＆LT;是connectionStrings configSource =ConnectionStrings.config＆GT;
  ＆LT; /＆是connectionStrings GT;
  ＆LT;！ -  ...  - ＆GT;
＆LT; /结构＆gt;
 




解决方案

文件属性

• 指定包含自定义应用程序配置设置的外部文件的相对路径


• 针对于的appSettings 部分


• 将合并（和覆盖）的config文件设置

修改指定的文件时，
• 不会导致Web应用程序重新启动


• http://msdn.microsoft.com/en-US/library/ms228154(v=vs.100).aspx


• 使用Configuration.AppSettings.Settings.添加 API将导致所有的设置被合并到主的.config 在<一个href=\"http://msdn.microsoft.com/en-us/library/system.configuration.configuration.aspx\">Configuration.保存电话。


• 因为.NET 1.1

configSource 属性

• 可以申请到配置文件的大部分路段，而不仅仅是的appSettings


• 将覆盖在整个栏目与外部文件，否合并


• CAN导致Web应用程序重新启动


• http://msdn.microsoft.com/en-US/library/system.configuration.sectioninformation.configsource(v=vs.100).aspx


• 使用Configuration.AppSettings.Settings.添加 API将导致所有的设置被添加到 configSource <指定的文件/ code>在<一个href=\"http://msdn.microsoft.com/en-us/library/system.configuration.configuration.aspx\">Configuration.保存电话。


• 因为.NET 2.0

的文件属性指定包含自定义设置，如您在web.config文件的appSettings进入做一个​​外部文件。
同时，在 configSource指定的外部文件属性包含您声明configSource的部分中的设置。例如，如果您使用的网页部分的configSource属性，则外部文件将包含的页面部分中的设置。

  

在specifified外部配置声明的自定义设置
  文件属性将与的appSettings的设置合并
  在web.config文件部分。在此同时，该configSource
  不支持合并，这意味着你必须移动整个
  部分设置到外部文件。

<一个href=\"http://www.$c$cproject.com/Messages/1463547/Re-difference-between-configSource-and-file-attrib.aspx\">http://www.$c$cproject.com/Messages/1463547/Re-difference-between-configSource-and-file-attrib.aspx

Within an web.config-file in an ASP.NET-application some sections of config, like appSettings and connectionStrings, supports the attributes file and configSource.

What is the difference between using the file-attribute and the configSource-attribute? When should you use which attribute and can you use both?

<?xml version="1.0"?>
<configuration>
  <appSettings file="AppSettings.config">
  </appSettings>
  <connectionStrings configSource="ConnectionStrings.config">      
  </connectionStrings>
  <!-- ... -->
</configuration>

解决方案

file attribute

• Specifies a relative path to an external file that contains custom application configuration settings
• specific to the appSettings section
• will merge (and override) settings in the .config file
• will not cause web application to restart when modifying the specified file
• http://msdn.microsoft.com/en-US/library/ms228154(v=vs.100).aspx
• Using the Configuration.AppSettings.Settings.Add API will result in all settings being merged back into the main .config on a Configuration.Save call.
• since .NET 1.1

configSource attribute

• can apply to most sections of a configuration file, not just appSettings
• will override the entire section with the external file, no merging
• CAN cause web application to restart
• http://msdn.microsoft.com/en-US/library/system.configuration.sectioninformation.configsource(v=vs.100).aspx
• Using the Configuration.AppSettings.Settings.Add API will result in all settings being added to the file specified in configSource on a Configuration.Save call.
• since .NET 2.0

The file attribute specifies an external file containing custom settings like you do in the appSettings entry of the web.config file. Meanwhile, the external file specified in the configSource attribute contains the settings for the section which you declare the configSource for. For example, if you use the configSource attribute of the pages section, then the external file will contain the settings for the pages section.

The custom settings declared in the external config specifified in the file attribute will be merged with the settings in the appSettings section in the web.config file. In the meanwhile, the configSource does not support merging, it means that you'll have to move the entire section settings into the external file.

http://www.codeproject.com/Messages/1463547/Re-difference-between-configSource-and-file-attrib.aspx

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