ASP.NET Getting started more detail

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ASP.NETGetting started more detail
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WOW! factors

• Too many to list
• Heres a few favorites
• Code-behind programming model
• Easy and fast development
• Automatic code generation
• Any browser, any device
• Reliable
• Compiled applications fast fast fast the
  fastest web platform that exists today (bar none)

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WOW! factors (continued)

• Favorites (continued)
• Language-neutral
• Can inherit from other classes even if they were
  written in a different language
• Great development tool (VS .NET)
• Applications feel solid and fast
• Server-side web controls
• Server-side validation, complemented by
  client-side validation code that is written for
  you

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WOW! factors (continued)

• Favorites (continued)
• Great state management
• Great authentication and authorization
  infrastructure
• Great connectivity to databases
• Based upon and takes advantage of Internet
  standards
• Rich functionality
• Security is built in
• XML Web Services
• Can access functionality in over 6,500 base
  classes

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The best ASP.NET WOW! factor

• Code-behind development
• This development model separates
• presentation code
• from
• application code

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Demos and discussion

• Getting started
• with ASP.NET

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Tour of ASP.NET

• Highlights
• File gt Open Web Site
• Your home directory ASP.NET Web Application
• Web form
• webform.aspx
• Code-behind file
• webform.aspx.cs
• Build process (compile)
• Keyboard shortcut is CtrlShiftB
• Or File gt View In Browser

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File gt Open gt Project From Web

• ASP.NET Web Application
• The URL includes the location and the web app
  name
• The Location the web server
• The Web App Name the alias/name of your app

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Whats in an ASP.NET application?

• VS .NET automatically adds essential project
  references (to class libraries) and files needed
  to get started
• References (to class libraries)
• System and System.Data
• System.Web, System.Drawing, and System.XML
• Files
• WebForm1.aspx user interface code
• WebForm1.aspx.cs class file that contains the
  system- and user-generated source code (e.g. C)
• Web.Config application configuration settings

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The VS .NET app dev environment

• Design view has two tabbed panels visible
• Design
• WYSIWYG editor
• HTML
• The HTML code
• The design surface offers two page layout modes
• Grid Layout
• Flow Layout (use this one!)

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Code behind

• Every web form also has a code-behind file
• It contains the .NET language code
• Example name WebForm1.aspx.cs
• When you open a web form, its code-behind file
  does NOT automatically open
• To open it, double-click on an empty area of the
  design surface (or press F7)
• If you double-click on one of the controls, it
  will open the code-behind file with the cursor
  positioned inside the code block that implements
  the control

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Code-behind file structure

• using System
• using System.Collections
• using System.ComponentModel
• using System.Data
• using System.Drawing
• using System.Web
• using System.Web.SessionState
• using System.Web.UI
• using System.Web.UI.WebControls
• using System.Web.UI.HtmlControls
• namespace MySolution
• /// ltsummarygt
• /// Summary description for WebForm1.
• /// lt/summarygt
• public class WebForm1 System.Web.UI.Page
• protected System.Web.UI.WebControls.Label
  lbl_Label
• protected System.Web.UI.WebControls.HyperLink
  hpl_Linktopage

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Inherits System.Web.UI.Page

• When you are creating a web form (aspx), you are
  writing a class
• Your web form inherits from a System.Web.UI.Page
  class in the .NET Framework
• The Page object serves as the naming container
  for all server controls in a page
• Server controls?
• The form control, which holds
• Buttons, labels, textboxes, list controls, etc.