net 6 7 buildruntime pains - Using Umbraco And Getting Started

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Martin Griffiths 826 posts 1269 karma points c-trib

Nov 09, 2022 @ 16:23

0

.net 6 & 7 build/runtime pains

Using Umbraco And Getting Started

Umbraco 9

Apologies for this not being massively Umbraco specific, but i've just installed the final .net7 SDK along with a Visual Studio upgrade and now seem to be having some problems....

Upon re-opening my .net 6/Umbraco 10 project I can no longer use dotnet watch run and get the following error:

Unhandled exception. System.IO.FileNotFoundException: Could not find file or assembly 'System.Runtime, Version=7.0.0.0.

So, two things. 1. I'm not using .net7 in this project and 2. I have .net 7 installed and it's complaining I don't, but I guess it's because the project targets .net 6.

If I use dotnet build and dotnet build run....all is good! Any help much appreciated.

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Anders Bjerner 487 posts 2989 karma points MVP 7x admin c-trib

Nov 09, 2022 @ 21:40
100
Hi Martin

This appears to be an issue with the .NET SDK. You can see an issue for it here: https://github.com/dotnet/sdk/issues/28942

For now, a solution could be adding a global.json file at the root of your project with the following content:
```
{
    "sdk": {
        "version": "6.0.403"
    }
}
```
This tells .NET to use a specific SDK rather than the newest. I think 6.0.403 is the newest version of .NET 6, but in my case, mine was a bit older. If you don't have the specified version, dotnet watch will result in an error but also list of versions that you do have installed.
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Martin Griffiths 826 posts 1269 karma points c-trib

Nov 09, 2022 @ 22:21

0

Anders you star!

This had me scratching my head all afternoon, even after intense googling!

Thank you!

Martin

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Sebastiaan Janssen 5045 posts 15477 karma points MVP admin hq

Nov 10, 2022 @ 10:16
0
To make that global.json less version-specific you can do:
```
{
  "sdk": {
    "allowPrerelease": false,
    "version": "6.0.0",
    "rollForward": "latestMinor"
  }
}
```
So that would pick whatever the newest 6.x is installed on the machine.

Please do use 6.0.403! It fixes a nasty bug with System.Globalization.AppLocalIcu which Umbraco uses (ps. the advertised .NET version number for that is 6.0.11, I don't know why the SDK / Core have a different version number).
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.net 6 & 7 build/runtime pains