哪里可以找到IIS管理器连接字符串的位置

Question

I was getting an error saying that one of my connection string in my application's web.config file was already defined.

I checked in the IIS settings and when I checked the connection string property it was there already with Entry Type : Inherited.

So I went up the chain and went all the way up to the root of the localhost and checked the connection strings there.

I found a bunch of connection strings there as well.. but they're also all with Entry Type Inherited..

I checked the web.config file inside the wwwroot folder but didn't find any connection strings defined in there..

Where could these connection strings be coming from?...

Answer 1

Configuration files in .NET are inherited in the following order:

• systemroot\\Microsoft .NET\\Framework\\versionNumber\\CONFIG\\Machine.config
• systemroot\\Microsoft .NET\\Framework\\versionNumber\\CONFIG\\Web.config (ASP.NET only)
• (application directory)\\Web.config

So the connection strings that show up as "inherited" are specified in either of the upper two files.

Reference: MSDN: ASP.NET Configuration File Hierarchy and Inheritance

If you don't want to alter the machine-wide configuration, you can <clear /> them from being inherited in your application's configuration as explained in What does <clear /> signify when specifying a connectionstring? :

<connectionStrings>
   <clear />
   <add name="LocalSqlServer" connectionString="..." /> 
</connectionStrings>