The document summarizes a .NET development project that demonstrated various technologies including WinForms, ADO.NET, ASP.NET, T-SQL, and SQL Server. It used an n-tier architecture with separate tiers for the user interface, business logic, data access, and stored procedures. Business rules were encapsulated and validated. Data access was stateless through ADO.NET. Stored procedures were used for database access and code reusability. XML was used to populate datasets and configure the application. JavaScript created a tabbed interface.

1. Roger Loving
.NET Development

2. Introduction –
 The following slides review my most recent
.NET development project.
 Technologies demonstrated are: WinForms,
ADO.NET, ASP.NET, T-SQL, SQL Server

3. N-Tier Development
Multiple tiered Solution:
Windows Client: User interface
Business: Business rules and entities
Data Access: Interface to T-SQL stored procs
Stored Procs: Database access
Entities: Business and Exception objects

4. Business Rules  Encapsulation of discrete
business objects and logic
 Validation of business entities
 Use of XML documentation tags
 Fully commented

5. Data Access  Stateless data access tier
 No direct SQL
 db access through ADO.NET
 Using the Dispose() objects
 Custom exceptions

6. Transact-SQL
Stored Proc usage:
 Database security
 Network efficiency
 Code re-usability
 Use of transactions

7. Code sample
 Full object oriented programming
 Use of polymorphism, inheritance, and n-tier
 Try/catch blocks
 Status strips

8. Web based
 Web Application after
conversion from Windows app

9. Windows app  Tabbed layout provides intuitive
groupings of functionality and
compact layout

10. XML public static DataSet GetStates() {
// create a new dataset
DataSet ds = new DataSet(Properties.Settings.Default.StatesDatasetName);
// read the data from the xml file
ds.ReadXml(Properties.Settings.Default.StatesDatasetFileName);
return ds;
}
 XML used to populate a dataset
<?xml version="1.0" encoding="utf-8" ?>
<Abbreviations xmlns="http://tempuri.org/States.xsd">
<State>
<Name>ALABAMA</Name>
<Abbreviation>AL</Abbreviation>
</State>
<State>
<Name>ALASKA</Name>
<Abbreviation>AK</Abbreviation>
</State>
<State>
<Name>AMERICAN SAMOA</Name>
<Abbreviation>AS</Abbreviation>
</State>
<State>
<Name>ARIZONA</Name>
<Abbreviation>AZ</Abbreviation>
</State>
<State>
<Name>ARKANSAS</Name>
<Abbreviation>AR</Abbreviation>
</State>
<State>
<Name>CALIFORNIA</Name>
<Abbreviation>CA</Abbreviation>

11. Configuration
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<system.web>
<authorization>
<allow roles="Librarian" />
</authorization>
<compilation debug="true" />
<authentication mode="Forms" />
<roleManager enabled="true" />
</system.web>
<appSettings>
<add key="StatesDatasetFileName" value="~/XmlData/States.xml" />
</appSettings>
<system.net>
<mailSettings>
<smtp from="rloving10@gmail.com">  use of administration tool and
<network host="smtp.gmail.com" password="xxxxxxx"
userName="roger.loving" />
editing of web.config
</smtp>
</mailSettings>
</system.net>
</configuration>

12. Javascript
/* Find the nodes where class="tabbertab" */
if(childNodes[i].className &&
childNodes[i].className.match(this.REclassTab)) {
/* Create a new object to save info about this tab */
t = new Object();
/* Save a pointer to the div for this tab */  Javascript is used to create a
t.div = childNodes[i];
tabbed menu format
/* Add the new object to the array of tabs */
this.tabs[this.tabs.length] = t;
/* If the class name contains classTabDefault,
then select this tab by default.
*/
if (childNodes[i].className.match(this.REclassTabDefault)) {
defaultTab = this.tabs.length-1;
}
}
}
/* Create a new UL list to hold the tab headings */
DOM_ul = document.createElement("ul");
DOM_ul.className = this.classNav;
/* Loop through each tab we found */
for (i=0; i < this.tabs.length; i++) {
t = this.tabs[i];
/* Get the label to use for this tab:
From the title attribute on the DIV,
Or from one of the this.titleElements[] elements,
Or use an automatically generated number.
*/
t.headingText = t.div.title;