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Years back I made some C# programs and have used the EXE-files since then, but lately - a year or two - I noticed they are very slow to start - and we're talking 20-30 seconds from I 2-click to the userface shows up.
Why and how can I make them faster ?
Is it possible to recompile the projects using Visual Studio 2022, and maybe to use a modern .NET Framework, such as 4.8?
THX, I'll try !
we're talking 20-30 seconds from I 2-click to the userface shows up
Sounds like perhaps a virus program may be causing this, scanning the executable each time but also odd that it started all of the sudden. Another thought is a Windows update may be the issue.
They start immediately on my OS, Debug or Release
(Windows 10 21H1, VS 2022)
Random exe =>
I now downloaded 4.8 as explaned here:
Severity Code Description Project File Line Suppression State
Error The reference assemblies for .NETFramework,Version=v4.0 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks KSPause
but still it wants I get this error !
I think it has to do with references ... but where are they 'hidden' in the VS2022 ... I haven't worked in VS since VS2008 !
I think it has to do with references ... but where are they 'hidden' in the VS2022
This means the project is targeting .NET Core Framework not the old .NET Framework.
What should I then do instead ?
Pick green which is classic .NET Framework while red is .NET Core Framework
I beleave that for NEW projects you can choose - but I have updated the OLD VS2008 project til VS2022 so where can I change/choose between your 'red' and 'green' choices ?
Did you open the original project in Visual Studio and did it ask to use the new .NET Framework 4.8 automatically?
I tried to open my VS2008 project in VS2022 - I then was forced to UPDATE it and succeeded - then compiled and then came the error message shown earlier.
My advice is to create a new green project, add required references, build, did the build successful? Yes, bring in any classes, build, successful, create required forms, replicate old forms, build etc...
This way as per above may be a pain but ensures success or issues incrementally.
Sticky points, are there old out-of-date references and/or com references that there may be better choices.
Since back in VS2008 a great deal has changed so be prepared, even when a build is successful check the output window for warnings and suggestions.
My advice is to never open a old project in a new version of Visual Studio, always make a copy and use the copy. Also, consider using some form of source control such as GitHub which is a) free b) works in Visual Studio. There are plenty of information out there to get started with Visual Studio and GitHub.
Is it a Windows Forms application that contains just sources (no other libraries)?
Did you check if the Solution Explorer window and Project Properties look familiar?
Hi @KeldSor
Since your application is using older version of .Net Framework, it is recommended to upgrade to latest version. However, it is not only the reason for slowness.
You can do following troubleshoot: