The old hacker adage “Garbage in, garbage out� has never been so important as it is today. With ever-increasing amounts of information flowing into and out of modern applications, the task of an application developer to control and verify information is critically important to any software project. For the first time, Data Entry and Validation with C# and VB .NET Windows Forms brings together current knowledge on this subject in an understandable, easy-to-read form. Covering development and best practices for data entry and validation, including GDI+, custom controls, localization, accessibility, proper data validation techniques, and best practices with Visual Basic and C#, Data Entry and Validation with C# and VB .NET Windows Forms is a book no modern programmer should be without.