Microsoft .net Framework 4 Multi Targeting Pack !!hot!! -

#if NET40 // Use legacy HttpWebRequest var request = WebRequest.Create(url); #else // Use modern HttpClient using var client = new HttpClient(); #endif

The is a component that allows Visual Studio (2010–2019, and some legacy workloads in later editions) to reference assemblies from multiple .NET Framework versions — specifically versions 2.0, 3.0, 3.5, and 4.x — even when only .NET Framework 4 is installed on the development machine. microsoft .net framework 4 multi targeting pack

Install the .NET Framework 4.8 Developer Pack (which includes all previous targeting packs from 4.0 through 4.8). This is the most future-proof method. #if NET40 // Use legacy HttpWebRequest var request

Imagine you have Visual Studio 2012 (which uses .NET 4.5 by default) installed on your machine. However, your company has a critical application running on servers that only support .NET 4.0. You cannot simply upgrade the servers, but you need to write code that runs on them. Imagine you have Visual Studio 2012 (which uses