I got this good article from Microsoft:
How To Create an ASP.NET Application from Multiple Projects for Team Development
I copied all their content in my Blog before, and put there , nobody told me sth. about it, but yesterday I transfer my old blog to this new one, sb. else posted comment and let me know seems I can not copy all content here.
Ok, let me just copy their Summary and give the left to redirect their site. But I am just worried about they change their URL and I will lost this article. I really need it.
loadTOCNode(1, ‘summary’); This article describes how to make multiple ASP.NET projects participate in the same Web application.
You may find it useful to separate a large Web application project into multiple projects for team development of ASP.NET Web applications in Microsoft Visual Studio .NET. Microsoft recommends that you use source control software, such as Microsoft Visual SourceSafe, in all scenarios.
Developing a large Web site frequently involves several developers. These developers must be able to work on specific sections of a Web application without interfering with one another and yet still be able to use each other’s work as the project progresses. To do this, you can use a single project in a Visual Studio .NET solution. You can also separate a Web application into multiple projects by dividing the development project into units to make development easier.
You can develop Web applications in single project or multi-project Visual Studio .NET solutions. The advantages and disadvantages of each method are outlined in the sections to follow.
(… Please go to MS site to read more…. )