How Can I Use a .NET 2.0 Mixed-Mode Assembly in a .NET 4.0 Project?

Integrating .NET 2.0 Mixed-Mode Assemblies into .NET 4.0 Projects

Using a .NET 2.0 mixed-mode assembly within a .NET 4.0 project can present compatibility challenges due to differences in the common language runtime (CLR). This guide outlines the necessary steps to resolve these issues.

To successfully utilize a CLR 2.0 mixed-mode assembly in your .NET 4.0 application:

1. Configure App.config:

   Add the following XML snippet within the <configuration> element of your application's App.config file:

   <code class="language-xml"><?xml version="1.0"?>
   <configuration>
       <startup useLegacyV2RuntimeActivationPolicy="true">
           <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0" />
       </startup>
   </configuration></code>

   The useLegacyV2RuntimeActivationPolicy setting instructs the CLR to load the mixed-mode assembly using the latest runtime version (4.0), ensuring compatibility.

Important Consideration: This solution specifically addresses mixed-mode assemblies (typically created using C /CLI). Purely managed .NET 2.0 assemblies generally do not require this configuration.

The above is the detailed content of How Can I Use a .NET 2.0 Mixed-Mode Assembly in a .NET 4.0 Project?. For more information, please follow other related articles on the PHP Chinese website!