While I was on my speaking trip in Europe a couple folks asked me how they could create their own search screen instead of using the built-in search functionality that LightSwitch provides. Basically they wanted the search to come up blank until a user entered specific search criteria and they only wanted to search on a specific field. I posted how to do this on my blog. I explain a couple options you have that allow you to tweak the default search screens and then show you how easy it is to build your own.
–Beth Massi, Visual Studio Community