How to Prevent FileNotFoundException When Using XML Serialization in Visual Studio?

Automating XML Serialization Assembly Generation During the Build Process

When your code references an assembly designated for XML serialization, a FileNotFoundException might occur, even if the serialization assembly is successfully generated. This is because the framework generates the assembly only if it's missing.

To resolve this, Visual Studio can be configured to automatically create the XML serialization assembly during the build:

1. Disabling the /proxytypes Switch:

   • In your project's .csproj or .vbproj file, add this property to the relevant configuration:

<code class="language-xml"><sgenuseproxytypes>false</sgenuseproxytypes></code>

2. Enabling GenerateSerializationAssemblies:

   • Ensure this property is set to "On":

<code class="language-xml"><generateserializationassemblies>On</generateserializationassemblies></code>

These steps ensure Visual Studio generates the necessary XML serialization assembly during the build, preventing the FileNotFoundException.

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