ASP.NET和Visual Studio - 添加项目引用与Bin文件夹DLL

I just started a new job yesterday and this is only my second job working in ASP.NET. We were setting up my dev box and were having trouble with some third party components like Telerik, etc. I was noticing that they were installed these third party tools, hunting down the DLL files, copying them into the bin and then adding a reference to the project which points to the file in the BIN. To me, this doesn't seem like normal practice.I just started a new job yesterday and this is