C# Web Forms 实战：动态创建用户界面

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"C# Web Forms Lab" 是一本专注于C#编程语言在Web应用程序开发中的实战指南，特别是针对Microsoft .NET平台上的动态Web界面设计。此书强调了C#的易用性和可视化特性，类似于Visual Basic，它提供了一种直观的拖放式设计方法，使得创建用户界面变得简单直观。例如，通过工具箱可以直接添加控件到表单上，双击按钮即可进入代码视图，智能感知功能会协助开发者编写无误的代码，提高开发效率。在这个实验室项目中，学生将学习如何利用Visual Studio.NET的Web Forms工具来构建可扩展且浏览器无关的Web应用用户界面，完全基于C#编程。重点在于理解和实践如何使用C#创建动态网页，这些网页是基于ASP+Web Forms技术构建的。通过这个过程，学生将掌握如何： 1. 运用C#进行动态Web页面开发：理解并掌握如何使用C#语言编写服务器端脚本来控制和响应用户的请求，构建动态内容。 2. 实现输入验证：学会如何在客户端和服务器端同时对Web表单字段进行验证，而无需手动编写复杂的验证逻辑。这涉及到前端JavaScript和后端C#的协同工作，确保数据的准确性和安全性。 3. 准备工作：在开始实验之前，学生需要熟悉C#的基本语法、面向对象编程概念以及.NET框架的工作原理，以便更好地理解和应用所学知识。 4. 额外练习：值得注意的是，该实验室还有关于数据处理和调试的额外Web Forms练习，这些内容将进一步提升学生的实际操作能力和问题解决能力。完成这个实验室后，参与者将不仅具备创建高效、用户友好的Web界面的能力，还将对C# Web Forms技术有深入的理解和实践经验，这对于任何希望在IT领域从事Web开发的人来说都是一个重要的技能提升。

C# Lab: Creating Dynamic Web

UI Using Web Forms

C# is built from the ground up to create scalable, dynamic applications for the Micros oft

.NET

platform. For the pages that make up the user interface of a dynamic Web

application C# brings Visual Basic-like WYSIWYG design and coding techniques to the

Web.

Imagine this: you drag a button from the toolbox and drop it on a form. Double-click the

button and your view switches to the code view with your cursor already positioned in

the appropriate event handler. As you type, IntelliSense statement c ompletion helps you

create error-free code, fast. Sound easy? It is, and you’ve just created a form for the

Web.

In this lab, you will use the Web Forms designer in Visual Studio.NET to create dynamic,

scalable, browser-independent UI for a Web application using the C# programming

language.

Note: There are additional Web Forms exercises in the Data and Debugger labs.

Objectives

After completing this lab, you will be able to:

 Use C# to create dynamic Web pages based on the ASP+ Web Forms technology

 Add input validation to Web Form fields that executes on both the client and the

server without writing any code

Before You Begin

Prerequisites

This lab assumes that you have a computer running Windows 2000 and the Microsoft

Visual Studio.NET Beta1 development system.

Background

Web Forms Support in Visual Studio.NET

One of the key benefits of the Web Forms framework over ASP is a clean separation of

code from the declarative HTML and X ML tags that define the visible elements of a page.

Visual Studio.NET separates these two components in a .CS file, which contains the logic

for the page, and an ASPX file, which contains the HTML and XML tags.

When you open the ASPX file in Visual Studio, the file is displayed using the Web Forms

designer. This designer presents two views of the ASPX file. The Design View lets you

edit the visual elements of the form using the familiar drag, drop and click techniques

used in Visual Basic programming. HTML View permits you to directly manipulate the

declarative HTML and XML tags. You can switch between views by clicking the Design

and HTML buttons at the bottom of the page.

When you open the .CS file (or double-click a control in Design View) this file is opened

using the C# code editor. You get the full power of the C# programming language plus

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