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Hi all,
Is there a way to check what version of .net core is installed? And if it isn't, a way to offer to install it?
How would you do this if there is a way?
Thank you in advance for any aid 
It is for this software: Please login to see this link.. See Troubleshooting steps for specific versions of .net.
Run the command "C:\Program Files\dotnet\dotnet.exe" --list-runtimes and capture the output, maybe in Console object or Pipe object, or by writing a simple batch file that outputs to text document and running it. See Please login to see this link. for more specifics.
Run the command "C:\Program Files\dotnet\dotnet.exe" --list-runtimes and capture the output, maybe in Console object or Pipe object, or by writing a simple batch file that outputs to text document and running it. See Please login to see this link. for more specifics.
I much appreciate the reply, so huge thank you!
Sadly, I'm no good at writing batch files so put up a help request on stackoverflow which got deleted - so much for asking for help.
I found batch file code on stackoverflow that someone had put up which runs at the end of the installation but it only works on 64 bit due to the reg key it looks up. So for 32 bit systems, it will always assume they don't have it installed:
But it works.
@echo offTitle Mod Studio 2 .NET Core Check
:: Check for .Net Core v3.1
echo:
echo Checking your computer for .Net Core v3.1 which is required by Mod Studio 2 ...
echo:
setlocal enabledelayedexpansion
set g_strInternalOutputFullFilename=%TEMP%\MS2netcorecheck.log
REG QUERY "HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\dotnet\Setup\InstalledVersions\x64\sharedfx\Microsoft.NETCore.App" /s|FIND "3.1" > "!g_strInternalOutputFullFilename!"
IF %ErrorLevel% EQU 0 (
echo .Net Core v3.1 is already installed.
echo:
echo Please press any key to close this window.
echo:
pause >nul
Goto :SkipDotNet
) else (
echo .Net Core v3.1 is NOT installed.
echo:
echo Please download and install .Net Core v3.1 now ...
echo:
echo Please do not click on the close button as this will not load the download page.
echo:
echo To be taken to the .Net Core v3.1 download page now, please press any key.
echo:
pause
)
::Install .Net Core v3.1
Start "" https://dotnet.microsoft.com/download/dotnet-core/thank-you/runtime-desktop-3.1.3-windows-x64-installer
:SkipDotNetIt would be better to have a script which:
To write from batch to a file, use
echo Installed > output.txt
The > output means the standard output lines (as opposed to standard error, 2>) will go to the text file.
The dotnet list--runtimes could work if you output it with >, then use FIND/FINDSTR.
Alternatively, as seen in the REG line, you can pass the results directly to FIND/FINDSTR with the | operator.
Program1 | Program2
...means Program2 will get Program1's output as Program2's input.
To write from batch to a file, use
echo Installed > output.txt
The > output means the standard output lines (as opposed to standard error, 2>) will go to the text file.
The dotnet list--runtimes could work if you output it with >, then use FIND/FINDSTR.Alternatively, as seen in the REG line, you can pass the results directly to FIND/FINDSTR with the | operator.
Program1 | Program2
...means Program2 will get Program1's output as Program2's input.
Thank you Phi.
I have managed to accomplish the checking on net core using the dotnet --list-runtimes command instead of registry key
If anyone else wants the code, here it is:
@echo off
Title Mod Studio 2 .NET Core Check
:: Check for .Net Core v3.1
echo:
echo Checking your computer for .Net Core v3.1 which is required by Mod Studio 2 ...
echo:
setlocal enabledelayedexpansion
set OutputFilename=%TEMP%\MS2netcorecheck.log
:: Send dotnet results to output log file and find relevant core version
dotnet --list-runtimes | FIND "Microsoft.NETCore.App 3.1" > "!OutputFilename!"
:: If search result is positive then ...
IF %ErrorLevel% EQU 0 (
DEL /F /Q %TEMP%\MS2netcorecheck.log
@dotnet --list-runtimes > "!OutputFilename!"
echo .Net Core v3.1 is already installed; therefore you do not need to download it.
echo:
echo Please press any key to close this window.
echo:
pause >nul
Goto :SkipDotNet
) else (
DEL /F /Q %TEMP%\MS2netcorecheck.log
@dotnet --list-runtimes > "!OutputFilename!"
echo .Net Core v3.1 is NOT installed.
echo:
echo Please download and install .Net Core v3.1 now ...
echo:
echo Please do NOT click on the close button as this will not load the download page.
echo:
echo To be taken to the .Net Core v3.1 download page now, please press any key.
echo:
pause
)
::Install .Net Core v3.1
Start "" https://dotnet.microsoft.com/download/dotnet-core/thank-you/runtime-desktop-3.1.3-windows-x64-installer
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