Nuget re-targeting after upgrading from .Net Framework 4.5 to 4.6.1

c# asp.net .net visual-studio-2013 nuget
Vishal picture Vishal · Mar 16, 2016 · Viewed 53.4k times · Source

I have a .net solution with approx 30 projects, all of them targeting .Net Framework 4.5. and each referencing at least 3-4 NuGet packages.

We now need to update them to .Net Framework 4.6.1. So here's what I need to know:

  1. Do I need to re-target the NuGet packages as well or can I skip that since this will be an 'in-place' upgrade?
  2. If yes, can I just update the packages.config file for each project by replacing targetFramework="net45" with targetFramework="net461" for each NuGet package? I've seen a few threads recommending uninstall and then reinstall the package via 'update-package' command. I tried that today but it I ended up with a few errors.

Answer

Ken Hundley picture Ken Hundley · Nov 18, 2016

The packages will not be retargeted automatically, but there is an automated fix for this.

In Package Manager Console simply run:

Update-Package -Reinstall

This will force the package manager to reinstall every package in every project (without changing the version of the referenced package).

By reinstalling the packages after the new framework is targeted this changes all the references to the correct version.

You may also run this against a single project with :

Update-Package -Reinstall -ProjectName Project.Name.Here

I have used this technique many times to fix nuget reference issues.

Related questions

In C#, what is the difference between public, private, protected, and having no access modifier?

All my college years I have been using public, and would like to know the difference between public, private, and protected? Also what does static do as opposed to having nothing?

Read More
How to Convert JSON object to Custom C# object?

Is there an easy way to populate my C# Object with the JSON object passed via AJAX? This is the JSON Object passed to C# WEBMETHOD from the page using JSON.stringify { "user": { "name": "asdf", "teamname": "b", "email": "c", "players": ["1", "2"] } } …

Read More
How to set session timeout in web.config

I have tried very hard but cannot find a solution on how to set session timeout value for in-process session for an ASP.Net web application. I am using VSTS 2008 + .Net 3.5 + C#. Here is what I wrote by myself to …

Read More