0rison.dll missing in bin\debug

Hi,
I couldn't build my solution as it shows the error:

"Metadata file 'C:\Users\panafgeo\Downloads\Compressed_0rison-master_0rison-master\bin\Debug\0rison.dll' could not be found ConsoleApp1"

IDE also complains of missing cs files.

[Mellorison]

Hi,
did you add Project "0rison.csproj" to your Solution as well as the Reference to "0rison" in your Project?