ASP.NET Lecture 3
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The document outlines key concepts in ASP.NET 4.0, including website design with master pages, themes, and skins, as well as ADO.NET fundamentals for database connectivity. It covers the structure of master pages and content pages, the implementation of themes for consistent styling, and techniques to prevent SQL injection attacks. Standards for creating user interfaces and managing data connections are also highlighted, alongside practical lab exercises for applying these concepts.
![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](https://image.slidesharecdn.com/asp-net-lect3-130212112121-phpapp02/85/ASP-NET-Lecture-3-42-320.jpg)
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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
Editor's Notes
- #4: 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
- #6: 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
- #7: Master Directive
- #9: MasterPage.masterDefault.aspxTry writing outside of content holder see errorSee designer
- #10: If a property is specified in a theme and in the individual control, the theme overrides all other
- #11: Theme a folder contains css and skins
- #12: 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)
- #15: Only controls with the skinID will apply the skin
- #16: 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.
- #18: Standardized ADO.NET through depending on a number of interfaces and base classes.
- #20: Connection.Close equivalent to connection.Dispose()
- #28: ADO.Net page
- #32: ADO.Net page