Hey, i've tried working on your project. But the project didn't have any .sln file so as alternative i had to run the .csproj file and create a .sln file . The .sln is the solution file by double clicking it will automatically open the project in visual studio along with all the files in the project showing in the solution explorer and is the starting point for all .net project.
Also in most .NET projects readme , license and gitignore are not shown on the solution explorer and those are updated separately so i had excluded those files from the solution explorer , you can still update them without any issue.
Hey, i've tried working on your project. But the project didn't have any .sln file so as alternative i had to run the .csproj file and create a .sln file . The .sln is the solution file by double clicking it will automatically open the project in visual studio along with all the files in the project showing in the solution explorer and is the starting point for all .net project.
Also in most .NET projects readme , license and gitignore are not shown on the solution explorer and those are updated separately so i had excluded those files from the solution explorer , you can still update them without any issue.
Also the .suo file shouldn't be added in source control as those are per user solution options and will create a new one automatically when ever you add change which was handled as i can see in the .gitignore ".vs" was also added. So it can be removed and works completely fine. you can further read it from here : https://docs.microsoft.com/en-gb/previous-versions/visualstudio/visual-studio-2015/extensibility/internals/solution-user-options-dot-suo-file?view=vs-2015&redirectedfrom=MSDN
Please check whether everything works for you.