ASP.NET web application project, BLLs and namespaces

We have a large ASP.NET project which has 100s of BLL classes. In our ObjectDataSources in the UI layer we have typename="". Because we are converting to a web application project, the typename has to include the root namespace of the project. This means we have 1000s of changes to make across lots of files开发者_StackOverflow中文版.

Are there any better options out there to prevent us from having to do this?

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Yes. Open the solution in Visual Studio and do a find and replace in files across the solution. I've done this before with this exact scenario.