无法将文件reference.dll复制到bin / reference.dll。该进程无法访问文件reference.dll，因为它正由另一个进程使用

For one of my ASP.NET 3.5 applications, every single time I try to build the web app, it throws the following build errors in Visual Studio 2008:For one of my ASP.NET 3.5 applications, every s