Upgrade from 3.9 to 4.6 on VS 2022 targets 'net7.0' cannot be referenced by a project that targets .NETFramework,Version=v4.5.1

Hi
I am upgrading Nop 3.9 to Version 4.6, when I load my project on Visual Studio 2022, and rebuild, it throws error of Project Framework Targets errors.  

Severity  Code  Description  Project  File  Line  Suppression State
Error    Project '..\..\Presentation\Nop.Web.Framework\Nop.Web.Framework.csproj' targets 'net7.0'. It cannot be referenced by a project that targets '.NETFramework,Version=v4.5.1'.  Nop.Plugin.Api      
Severity  Code  Description  Project  File  Line  Suppression State
Error    Project '..\..\Libraries\Nop.Data\Nop.Data.csproj' targets 'net7.0'. It cannot be referenced by a project that targets '.NETFramework,Version=v4.5.1'.  Nop.Plugin.Api      

Severity  Code  Description  Project  File  Line  Suppression State
Error    Project '..\..\Libraries\Nop.Services\Nop.Services.csproj' targets 'net7.0'. It cannot be referenced by a project that targets '.NETFramework,Version=v4.5.1'.  Nop.Plugin.Api      

Severity  Code  Description  Project  File  Line  Suppression State
Error    Project '..\..\Libraries\Nop.Core\Nop.Core.csproj' targets 'net7.0'. It cannot be referenced by a project that targets '.NETFramework,Version=v4.5.1'.  Nop.Plugin.Api      

I have followed the suggested requirements by the NOP group and all requirements are fulfilled by the link be link below.


https://docs.nopcommerce.com/en/installation-and-upgrading/technology-and-system-requirements.html
Any advise would be much appreciated


https://i.postimg.cc/nzjmFyfW/Screenshot-target-error.png
Thanks

Did you edit and upgrade the Project file for every project in the solution ?
Do you have any no-standard dependencies that are targeting .NETFramework,Version=v4.5.1

Yidna wrote:

Hi Yidna,
Thanks for your response, much appreciated.
1. I have edited all projects files version section from 4.5 to 7.0 below

    <TargetFramework>net7.0</TargetFramework>
    <Version>4.5.0.0</Version>

to

 <PropertyGroup>
    <TargetFramework>net7.0</TargetFramework>
    <Version>7.0.0.0</Version>

2. edited and updated nop.plugin.api project file below

    <AssemblyName>Nop.Plugin.Api</AssemblyName>
    <TargetFrameworkVersion>v7.0.0</TargetFrameworkVersion>

but still the same error

    Severity  Code  Description  Project  File  Line  Suppression State
Error    Project '..\..\Libraries\Nop.Core\Nop.Core.csproj' targets 'net7.0'. It cannot be referenced by a project that targets '.NETFramework,Version=v4.5.1'.  Nop.Plugin.Api      

According to your error the "Nop.Plugin.Api" project still references '.NETFramework,Version=v4.5.1'. It should be upgraded to .NET 7

Looks like it's a third-party project. I would also recommend contacting its developers to provide a working version of this plugin for nopCommerce 4.60

a.m. wrote:
Hi A.M
Many thanks for your response, and yes this is a custom plugin, and developed and working in the NOP V3.9, I am looking into this as a developer and upgrading it into NOP V4.6 ,
what would be the best way to make this plugin upgrade in V4.6, create a new plugin, and push all the code manually in the new V4.6?
or change the target reference version?

many thanks for your response.

You can not just change the version in the config file

Do you have the source code for the Plugin ?
Otherwise you will need create the plugin from scratch or contact the developer to upgrade

Or what does the Api plugin do - maybe use the nopCommerce Api plugin

Yidna wrote:
Hi Yidna
Thanks again for your response, much appreciated, Yes I have got the source code of the all custom plugin.

Api plugin is the API data-sharing communication between the NOP and CRM
in that case, what would be the best approach for a custom plugin upgrade, please?

Many thanks and much appreciated for your help

prabirchoudhury wrote:
There are many changes from 3.90 to 4.60, most notably async.  I recommend you make a copy of the built-in \Plugins\Nop.Plugin.Misc.WebApi.Frontend.  First, copy it into a temp folder, delete obj and bin folders if any, and then using an editor like notepad++, find/replace "Frontend" with your custom name (match case) in all files (including .csproj).   Then, copy the temp folder to your solution \Plugins folder.  Then, in Visual Studio, solution explorer, right-click Plugins folder, then Add  > Existing project , and select the .csproj file.
You can then build the project it to be sure it's OK before you start copying over your code and refactoring.