Gee with the VeeBee
I was looking at some of the fine ASP.NET Hands-on Labs that will be waiting for people at some conference upcoming (and hopefully shortly thereafter on a dev center I've heard about). As I went through, this caught my eye:
public class BusinessObject
{
public List<Employee> GetEmployeeList()
{
EmployeeDB objEmp = new EmployeeDB();
DataSet ds = objEmp.GetEmployees();
List<Employee> emp = new List<Employee>();
foreach(DataRow row in ds.Tables[0].Rows)
{
Employee obj = new Employee();
obj.EmployeeID = (int)row["EmployeeID"];
obj.FirstName = (string)row["FirstName"];
obj.LastName = (string)row["LastName"];
emp.Add(obj);
}
return emp;
}
}
Without going into the merits of the code itself, we see Generics in action. w00
Now for a short side trip. When not specifically coding with a coworker, or for online use by other folk, I tend to code in whichever of the two official languages the environment picks for me. It does mean that occasionally I type the extra ';' or 'Dim', but it works, and keeps me from going completely stale. Sooooooo, as I was working on this lab, I realized I was in a VB.NET project. Where the rumours true? What would I do?
After a bit of digging around, I discovered:
Public Class BusinessObject
Public Function GetEmployeelist() As List(Of Employee)
Dim data As New EmployeeData
Dim ds As DataSet
Dim item As Employee
Dim emps As New List(Of Employee)
ds = data.GetEmployees
For Each row As DataRow In ds.Tables("Employees").Rows
item = New Employee
With item
.EmployeeID = Convert.ToInt32(row("EmployeeID"))
.FirstName = row("FirstName")
.LastName = row("LastName")
End With
emps.Add(item)
Next
Return emps
End Function
End Class
Translation: Yes, doable in either official language (in fact, I would argue slightly more obvious what the template... oop, Generic ... is doing in VB.NET. Then again, maybe it's just my parenthetical style) w00 w00
TTFN - Kent
