在进行ASP.NET程序设计之前，首先要选择一种ASP.NET编程语言。ASP.NET的默认语言为Visual Basic.NET，并且本书所有案例都用VB.NET来编写。所以在这一章中我们将详细介绍VB.NET的基础。熟练掌握VB.NET各种数据类型、语法元素是掌握ASP.NET编程的基础，只有掌握了这些基本知识，才能编写出高效、可读性强的程序代码，也是掌握复杂的ASP.NET技术的基石-Before performing ASP.NET programming, we must first choose a ASP.NET programming language. ASP.NET, the default language is Visual Basic.NET, and all cases are with VB.NET book to write. Therefore, in this chapter we will detail the basis for VB.NET. Proficiency in a variety of data types VB.NET, ASP.NET programming syntax element is to master the foundation, and only mastered these basic knowledge in order to write efficient, readable program code, but also master complex ASP.NET Technology cornerstone