Invalid option '7.3' for /langversion. Use '/langversion:?' to list supported values in Asp.Net MVC
Hi you guys,
I have a project in Asp.Net Framework 4.5 and I'm using VS 2019 to build my project but today I get an error CS1617 Invalid option '7.3' for /langversion. Use '/langversion:?' to list supported values
Severity Code Description Project File Line Suppression State
Error CS1617 Invalid option '7.3' for /langversion. Use '/langversion:?' to list supported values. DVG.Warning.Web C:\Company\Projects\CSSM\Main\SourceAdmin\admin\DIG.Warning.Web\CSC 1 Active
I tried to clear and rebuild the project solution but it didn't work for me.
Anyone can help me to fix it?
Thanks for any suggestions.
-
N0
Nguyễn Danh Bảo An Aug 28 2021
Clean and Rebuild didn't work for me until I closed Visual Studio and deleted the
.vs
folder then re-opened, cleaned and rebuilt. -
S0
Sandeep Kumar Aug 28 2021
You can try to open
Visual Studio Installer
> 2019 >modify
button -> chooseIndividual components
tab.Select like in the image above and click
Modify
button and retry build your project.This way solved the issue for me.
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