Book excerpt: This is the most comprehensive, practical guide to building enterpriseclass applications with SharePoint 2007, ASP.NET 2.0, Visual C# 2005, and the Microsoft Office 2007 system. Microsoft SharePoint 2007 Development Unleashed is designed for every working .NET developer: both those with SharePoint experience and those new to SharePoint. The authors thoroughly introduce SharePoint 2007 as a development platform and offer in-depth, example-rich coverage of every significant tool for programmers--from “Features and Solutions” to list events, from user profiles to Web Parts. You’ll walk step-by-step through building each major type of SharePoint application. You’ll also find in-depth coverage of SharePoint 2007’s rich collection of built-in Web services, including services for building document workspaces, centralizing the management of Excel spreadsheets, ensuring security, and much more.