1. 1 Introducing Web Developer Tools Rapid application development tools ASP.NET-compatible web editors –Visual Studio.NET Professional Edition –Visual Studio Express Freely available by download from Microsoft Can download from www.asp.net

2. 2 HTTP

3. 3 Introduction to ASP.NET Server Programming Client-server programming – client applications to communicate with server applications Dynamic web application interacts with application in ways that change the appearance or content –Shopping carts, membership databases, online catalogs, personalized web sites Limitations of client-side scripting alone are browser dependency and security

4. 4 Processing ASP.NET Applications

5. 5 Processing ASP.NET Applications (continued) Web Forms are web pages identified with the file extension.aspx ASP.NET engine dynamically compiles the assembly and translates into computer-specific instructions HTML output sent back to the browser Namespaces are a hierarchical way to organize base classes –System.Web.UI.HTMLControl (HTMLControl class) properties and methods common to all HTML server controls

6. 6 Server Controls

7. 7 Server Controls (continued) Server controls generate HTML tags, JavaScript, and Dynamic HTML (DHTML) output compatible with the browser Label, text box, and button controls generate a hidden input field named __EVENTVALIDATION __VIEWSTATE and __EVENTVALIDATION contain information about the controls

8. 8 Server Controls (continued)

9. 9 HTML Tags and HTML Controls HTML Server controls –Transform the HTML tag into HTML Server control Runat property is set to server; set ID property –Properties assigned values in the Properties window, opening tag, or server programming code –Generate HTML sent to the browser –Create server-side programs that interact with the controls with no JavaScript required

10. 10 Web Controls Web Server controls –Prefix asp:control name –Different properties than HTML controls Message1.InnerHTML = "Product 1" Message2.Text = "Product 2" –Set properties in markup or programmatically MyControl.BorderColor = System.Drawing.Color.Green

11. 11 Creating a Web Page Using a Web Editor

12. 12 Using the Postback Process Maintaining state – maintain information across browser requests Postback – posting of data back into the form Enable Secure Sockets Layer (SSL) protocol using https:// Set the EnableViewState property within @Page directive

13. 13 Summary Visual studio Express is a scaled down version of Visual Studio.NET and is used to create ASP.NET applications Solution Explorer window allows you to manage all of your files Set object properties in code manually or in the Properties window Toolbox contains commonly used controls, organized into tabs HTML is a markup language that uses tags to identify how to format and present the content; web pages created with HTML can end in.htm or.html Forms collect information from the visitor; form elements include text boxes, check boxes, and drop-down lists Create HTML code in HTML view, or Design view

14. 14 Summary (continued) Web Forms build dynamic web pages using new server-side controls that end in.aspx Enhance the user interface and increase interactivity HTML controls runat attribute set to server Server controls create output for the browser XHTML is a version of HTML that is XML-compliant XML files formatted with CSS or XSLT stylesheets XML files must be well formed –One root element in any XML document –Tags such as must be closed in the first tag or include a closing tag –Elements are case sensitive –All elements have an opening and closing tag

15. 15 Summary (continued) Namespaces are a hierarchical way to organize classes within the assemblies Dynamic Help and IntelliSense help programmers prevent syntax errors