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I had two web applications deployed in a site under IIS 7.5
site.com/myApp site.com/anotherMyApp
Now another devs deployed their app as root application
site.com/
Now when I access site.com/myApp or /anotherMyApp it throws:
The CodeDom provider type "Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" could not be located.
Source error :
Line 54: <system.codedom>
Line 55: <compilers>
Line 56: <compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:6 /nowarn:1659;1699;1701" />
Line 57: <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:14 /nowarn:41008 /define:_MYTYPE=\"Web\" /optionInfer+" />
Line 58: </compilers>
Source File: C:\inetpub\wwwrootprettysite\THEIR APPLICATION\web.config
Why is this happening?
Why is the "source error" in their application's webconfig and how does it affect my application?
How do I fix my applications without breaking theirs?
To clarify :
<system.codedom> section.
542
The CodeDOM provides types that represent many common types of source code elements. You can design a program that builds a source code model using CodeDOM elements to assemble an object graph. This object graph can be rendered as source code using a CodeDOM code generator for a supported programming language.
The <system. codedom> element contains compiler configuration settings for language providers installed on a computer in addition to the default providers that are installed with the . NET Framework, such as the CSharpCodeProvider and the VBCodeProvider.
DotNetCompilerPlatform 1.0. 2 package is released on NuGet. It enables ASP.NET to support the new language features and improves the compilation performance. To install this NuGet package, open NuGet Package Manager in visual studio, search Microsoft. CodeDom.
Your app inherits the config from its parent app, and your app doesn't have Microsoft.CodeDom.Providers.DotNetCompilerPlatform. That's why you see that error. There are several options.
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