<connectionStrings>
   <add name="sqlConnectionString" connectionString="Data Source=Server;uid=username;pwd=password;Initial Catalog=database;"/>
</connectionStrings>

public class MyFirstDbTable : GenericDatabaseTable
{
    protected override string TableName
    {    
         get    {    return "theTablesName;    }    
     }
     protected override TableColumn PrimaryKeyColumn
     {    
         get    {    return new TableColumn("primaryId", SqlDbType.Int); }    
      }
     protected override TableColumn [] Columns
     {
        get  {
                return new TableColumn []
                {
                      new TableColumn("strFirstCharColumn", SqlDbType.Char, 40),
                      new TableColumn("strSecondCharColumn", SqlDbType.Char, 40),
                      new TableColumn("intFirstIntColumn", SqlDbType.Int)
                 };
             }
     }
     
     // properties to access data
     public string FirstCharColumn
     {
         get { return (string)this.values["strFirstCharColumn"]; }
         set { this.values["strFirstCharColumn"] = value; }
     }
     public string SecondCharColumn
     {
         get { return (string)this.values["strSecondCharColumn"]; }
         set { this.values["strSecondCharColumn"] = value; }
     }
     public int FirstIntColumn
     {
         get { return (int)this.values["intFirstIntColumn"]; }
         set { this.values["intFirstIntColumn"] = value; }
     }
     // constructor to create an empty object
     public MyFirstDbTable() : base () { }
     
     // constructor to create an object based off of values
     public MyFirstDbTable(string one, string two, int three)
     {
         this.FirstCharColumn = one;
         this.SecondCharColumn = two;
         this.FirstIntColumn = three;
     }
     
     // constructor to retrieve an object from the database
      public MyFirstDbTable(int myId) : base(new TableIndex("primaryId", SqlDbType.Int, myId))    {  }
}
public class MainClass
{
     public static void Main()
     {
          // creates an empty object
        MyFirstDbTable ob = new MyFirstDbTable();
       // populates values
         ob.FirstCharColumn = "one!";
         ob.SecondCharColumn = "two...";
         ob.FirstIntColumn = 3;
       // inserts into database, and gets the Id
         ob.InsertIntoDatabase(); // ob.Id now refernces the correct primary key
       // change information
          ob.FirstCharColumn = "four!";
       // update database
          ob.Update();
       // delete from database
          ob.Delete();      // ob.Id should now be -1
      }
}