Transcript Web Server Programming

Visual Studio
Creating a Simple ASP.NET Application
Content
 The .NET Framework
 Visual Studio 2012 Environment
 A Simple ASP.NET Web Application
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The .NET Framework
 .NET Framework is a cluster of several technologies:
 .NET Languages: C#, Visual Basic.NET, JScript.NET, J#,
C++
 The Common Language Runtime (CLR): The engine
that executes all .NET programs
 The .NET Framework Class Library: The class library
for many prebuilt functionality (e.g. ADO.NET,
Windows Forms, etc.)
 ASP.NET
 Visual Studio.NET
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.NET Languages
 C# is designed for .NET technology
 C# and VB.NET uses the same .NET library
 C# and VB.NET codes are very similar
 VB6.0 and VB.NET are different languages because
VB.NET is an object-oriented language
 A C# programmer can easily understand and convert
VB.NET programs
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Intermediate Language (IL)
 All .NET languages are compiled into another low-
level language before the code is executed
 This lower-level language is the Common
Intermediate Language (CIL, or just IL)
 Because of this feature, C# programs can use VB.NET
(or any other .NET language) components
 Every EXE or DLL file built with a .NET language
contains IL code
 .NET Framework should be installed on the computer
that the .NET program is deployed
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Compilation
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Execution
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.NET Class Library
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Common Language Runtime (CLR)
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History of .NET
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.NET Framework Versions
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What’s New in the .NET Framework
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ASP.NET Versions
 ASP.NET 1.0: First release
 ASP.NET 1.1: Added performance, bug-fixes but no new
features
 ASP.NET 2.0: Prebuilt goodies that developers can use
without writing much code. New features: Website
navigation, easier database access, theming for web
page design
 ASP.NET 3.5: Embedded Ajax, LINQ
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Now, in this course?
 In this course, we’ll be developing
 ASP.NET 4.5 applications
 over .NET Framework 4.5
 on Visual Studio 2012
 using C# 5.0.
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Visual Studio Features
 Page Design: Drag & drop style; you don’t need to
understand HTML
 Automatic Error Detection
 Debugging Tools
 Intellisense: Statement completion for recognized
objects and listing information automatically
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Visual Studio 2012
 A powerful integrated development environment (IDE)
 Automates the steps required to compile source code
 Intelligently detect errors and suggest code where
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appropriate as you are typing (Intellisense)
Includes designers, enabling simple drag&drop design of
UI elements
Includes starter projects
Enables deployment
Enables debugging
etc.
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Visual Studio Versions
 Visual Studio Professional
 Visual Studio Premium
 Visual Studio Ultimate
 Visual Studio Express Edition: Free, but some features
are absent
 Visual C# Express: Contains only C#
 Visual Web Developer Express: Contains only web
application tools
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Visual Studio Solutions
 You create solutions in Visual Studio
 Solutions contain projects
 Solutions can contain multiple projects
 This enables you to work on shared code
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Solution
Explorer
Toolbox
Designer
Properties
Window
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Solution
Project
Source Files
Source Code
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Do NOT select
File -> New ->
Project ->
ASP.NET Web
Forms
Application
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Right-click the project name
and select Add -> Add New
Item
(equivalently: Add -> Web
Form)
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Switch to Design View
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Put a Label, press the Enter key,
and put a Button
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Double-click the button
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Write the code and press Ctrl-F5
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Click the button
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