If 2 people are working on the same ASP.NET C# site, each one must download all .cs files and recompile the whole site everytime a small change is done?

I am moving from classic ASP to ASP.NET
Me and my partner are working on the same site. Do we need to recompile everything, everytime we make a change to a .cs file? is there a way to work like classic ASP, just changing the code in the file that needs it?
thanks




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