Where can I find the schema (XSD) for a .csproj file
The csproj files are in fact MSBuild files. The xsd for those can be found here:
%windir%\Microsoft.NET\Framework\[framework version]\Microsoft.Build.xsd
The csproj files are in fact MSBuild files. The xsd for those can be found here:
%windir%\Microsoft.NET\Framework\[framework version]\Microsoft.Build.xsd