Create solution from existing application

[Uncle3MTA3]

Hi,
I recently started a new position and have a bit of a problem. I can't seem to find the solution files for a couple of the AdvancedHMI projects in this plant. There are more then a couple of bugs in the existing applications but I can't fix them if I can't find the original solution files.
So, my question is, can I take the exe and application files and generate a solution that I can work on? If so, how?
I did a quick search on this forum as well as a google search and couldn't find anything. Maybe I'm using the wrong search terms, I don't know.

[Archie]

If you only have the exe and dll files, you will not be able to modify the application. You need all of the source files.

As a general rule, I always recommend deploying the full solution with the application in order to avoid not having the source when needed.

[Uncle3MTA3]

I had a feeling that was the case. Unfortunately, the previous guy seems to have had no sense of order in the organizing of his files.
Fingers crossed I can find the original project somewhere so I don't need to recreate the entire thing from scratch if I need to change something.
Thanks