ASP.NET 4 Unleashed

Querying with the SearchExpression

The search expression functionality of the query extender is one of the most powerful expressions available. It enables you to specify a field or list of fields and search those fields by doing a comparison against a search string. This search can be a “starts with”, “contains”, or “ends with” search. Gone are the days in which the developer has to hand-write these kinds of queries, which is typically an arduous, error-prone process. This expression requires you to specify the SearchType and DataFields properties, but it does the rest of the magic for you. Optionally, you can use the ComparsionType to control the case-sensitivity of the search (depending on whether the underlying data source you used supports ...