ASP.NET Lecture 3
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This lecture presents: WebSite Design using Master Page and Themes and Skins. Website Navigation ADO.NET Fundamentals using Connected Model and Disconnected Models
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ASP.NET Lecture 3
- 1. ASP.NET 4.0 Julie Iskander MSC. Communication and Electronics
- 2. Lecture Outlines WebSite Design ◦ Master Page ◦ Themes and Skins ◦ Website Navigation ADO.NET Fundamentals ◦ Connected Model ◦ Disconnected Models
- 3. Website Design “A Consistent Look and Feel”
- 4. Master Page (.master) A templates that renders common appearance to all pages attached to it Rich design time support To work with them, we will create two types of pages MasterPages: a page template, contains controls and content placeholders ContentPages: references a single master page, to acquire layout, add page specific content in the content placeholders
- 5. .aspx .master In page All common HTML directive, MasterPageFile tags, <html>,<head>,<bo = “masterpage url” dy> Contain Content Control All common controls that is linked to a certain Contain ContentPlaceHolder in ContentPlaceholder the master page Control where the New content can be page content will appear added only in the content control Master Page (.master)
- 7. Content Page
- 8. Convert from an HTML to an aspx page
- 9. Themes and skins What is the problem? ◦ To make control properties consistent, not just style properties ◦ To style complex controls like Calendar and Grids Themes: ◦ Are control-based, not HTML-based ◦ Are applied on the server ◦ Don’t cascade as in CSS ◦ Set in web.config or in each individual page Skins: ◦ Are text files with .skin extension ◦ Contains a list of control tags and set properties that need to be standardized
- 10. Themes and Skins
- 11. Convert from an HTML to an aspx page
- 12. Themes in Page Directive
- 14. Named Skins and SkinID What happens if all skins have IDs?
- 15. Themes and Skins Applying Themes dynamically: ◦ Page.Theme ◦ Page.StyleSheet This must be done in the PreInit event. Why???????????? How to make a user change themes in his page?
- 17. ADO.NET Contains managed classes to connect to data sources (Relational DB), execute commands, manage disconnected data. It includes: ◦ Connection: establish connection to a DataSource. ◦ Command: execute SQL commands and stored procedures. ◦ DataReader: fast read-only, forward-only access. ◦ DataAdapter: fill DataSet from a DataSource, to apply changes to a DataSource, according to the
- 18. Connection class (implement IDBConnection) A limited-server resource must be opened as late as possible and release it as quickly as possible. Connection String Stored in web.config
- 19. Connection class (implements IDBConnection) To retrieve connection string Using System.Web.Configuration
- 20. Command Class (Implements IDbCommand) Command class to execute any type of SQL statement.
- 21. Command Methods
- 22. DataReader Class To read the data returned by a SELECT command one record at a time, in a forward-only, read-only stream. Provides the quickest possible access to data.
- 24. SQL Injection
- 25. SQL Injection Attacks The process of passing SQL code into an application, in a way that was not intended or anticipated by the application developer. Affects only applications that use SQL string building techniques to create a command with user-supplied values. Solution use parameterized command or a stored procedure
- 26. Parameterized Commands A command that uses placeholders in the SQL text.
- 27. Convert from an HTML to an aspx page
- 28. Disconnected Model Using DataAdapters and DataSets
- 30. Disconnected Model Using DataSets you can: ◦ Work on multiple tables and relations ◦ Get ChildRows using the relations ◦ Search Tables by criteria using Select Method More in Pro ASP.NET 4 pages 340 - 344
- 31. Convert from an HTML to an aspx page
- 32. Navigation Controls (Self study in lab)
- 33. Site Map Add a web.sitemap ◦ XML file describing the site
- 35. Control Binding to a sitemap Controls to map to: ◦ SiteMap Path ◦ Menu
- 36. Reading Assignment #3 Applying Themes Dynamically
- 37. Report #3 How to dynamically set a MasterPage and in which state of the Page life cycle? What is a TreeView Control?
- 38. Lab #3 Create masterpage.master for the site, with the date user control. Create three skins Default(green), Pink and Blue (StyleSheet, image and skin for image button) Add a sitemap to masterpage Add Home.aspx and Login.aspx Modify the three pages(register, books, checkout) to be able to use the master page
- 39. Lab #3 In register.aspx ◦ Get the country and city from the database Bonus: ◦ Create modifyCities.aspx, using disconnected model insert, edit and delete cities.
- 40. Lab Hints Control ID problem with masterpage and css??? ◦ Try ClientIDMode=static for page
- 41. Bonus Add a usercontrol to change themes, with the radiobuttons. Add it to the masterpage. How will it be applied to all pages????
- 42. REFERENCES [1] Beginning ASP.NET 4 In C# 2010, Matthew Macdonald, Apress [2] Web Application Architecture Principles, Protocols And Practices, Leon Shklar And Richard Rosen, Wiley [3] Professional AS P.NE T 4 In C# And VB, Bill Evjen, Scott Hanselman And Devin Rader, Wiley [4] Pro ASP.NET In C# 2010, Fourth Edition,matthew Macdonald, Adam Freeman, And Mario Szpuszta, Apress
Hinweis der Redaktion
- One way is by creating a template page that inherits System.Web.UI.Page, and use it as a parent to all other pagesVS Design doen’t support that
- When a page with masterpage is requested, the master page must be rendered and merged with the page contents to create a single final, page to be rendered to the response
- Master Directive
- MasterPage.masterDefault.aspxTry writing outside of content holder see errorSee designer
- If a property is specified in a theme and in the individual control, the theme overrides all other
- Theme a folder contains css and skins
- Try creating theme folder and add stylesTry creating skins for a calendar controlNo skin designer support, copy and past controls from pages after setting itTry cascading effect (theme vs. styesheettheme)
- Only controls with the skinID will apply the skin
- After PreInitthrow an exception because after preinit controls are createdTheme changes aren’t read until page reload and passed PreInitstageuseServer.Transfer to refresh to itself.
- Standardized ADO.NET through depending on a number of interfaces and base classes.
- Connection.Close equivalent to connection.Dispose()
- ADO.Net page
- ADO.Net page