Hello. I've got this simple collection populate code I downloaded from
the net (sorry can't find source now) I'm trying to test, but I can't
seem to get it to work. Any help would be greatly appreciated.
I've compiled the following VB.NET into a DLL:
Imports System
Imports System.Data
Imports System.Data.SqlClient
Imports System.Collections
Namespace jcpcollection
Public Class Users
Inherits CollectionBase
'Retrieves an item from the collection by index
Default Public Property Item(ByVal Index As Integer) As User
Get
Return CType(list.Item(Index), User)
End Get
Set(ByVal Value As User)
list.Item(Index) = Value
End Set
End Property
'Adds an item to the collection
Public Function Addx(ByVal Item As User) As Integer
Return list.Add(Item)
End Function
'test function
Public Function test As Integer
dim z as integer
z=150
return z
End Function
'Reports Total
Public Function totalentries As Integer
Return list.Count
End Function
Public Sub Remove(ByVal Item As User)
list.Remove(Item)
End Sub
'A function that checks the length of the email address , applied to
very member of the collection
Public Shared Function ValidateEmail(ByVal emailAddress As String)
If Not (emailAddress.Length > 0) Then Throw New
ArgumentException("Please provide a valid email address")
End Function
End Class 'Users Collection - strongly typed IList collection of User
objects
Public Class User
#Region "Attributes"
'Internal storage for the UserName property
Protected _UserName As String = Nothing
'The user name of the user
Public Property UserName() As String
Get
Return Me._UserName
End Get
Set(ByVal Value As String)
Me._UserName = Value
End Set
End Property
'Internal storage for the EmailAddress property
Protected _EmailAddress As String = Nothing
'Gets / Sets the EmailAddress of the User
Public Property EmailAddress() As String
Get
Return Me._EmailAddress
End Get
Set(ByVal Value As String)
Me._EmailAddress = Value
End Set
End Property
#End Region
#Region "Constructors/Destructors"
'A constructor that accepts a DataTable
Public Sub New(ByVal table As DataTable)
If table.Rows.Count > 0 Then
Dim row As DataRow
row = table.Rows(0)
'run the loop once because only one row can be matched to a member of
a collection
Me._EmailAddress = row("EmailAddress")
Me._UserName = row("UserName")
End If
End Sub
'Another constructor for initializing each member of the collection
Public Sub New(ByVal nEmailAddress As String, ByVal nUserName As
String)
Me._EmailAddress = nEmailAddress
Me._UserName = nUserName
End Sub
#End Region
#Region "Functions/Procedures/Operations"
#End Region
End Class 'User Class
End Namespace
===
And here the ASP.NET (VB) I'm using to test it with:
<%@ Import Namespace="System.IO" %>
<%@ Import Namespace="System.Diagnostics"%>
<%@ Import Namespace="System.Net" %>
<%@ Import Namespace="System.Web.Mail"%>
<%@ Import Namespace="System" %>
<%@ Import Namespace="jcpcollection" %>
<html>
<body text=#336633 bgcolor=#CCAA99>
<basefont size="2" font face="Veranda" color="#000000">
<form method="post" runat="server">
<asp:label id="mylabel" runat="server"/>
<br>
User:
<asp:textbox value="" runat="server" id="userin"
Rows="1" Width="200"/>
<br>
Email:
<asp:textbox value="" runat="server" id="emailin"
Rows="1" Width="200"/>
<br>
<br>
<br>
<asp:Button ID="submit" Text="Insert" Runat="server" onclick=testit
/>
</form>
<script language="VB" runat="server">
Sub Page_Load(Src as object, E as EventArgs )
'display total entries in collect here next
Dim nUsers As New Users
Dim nUser As User
dim howmany as integer
howmany = nUsers.totalentries
response.write("<br>")
response.write(howmany)
response.write("<br>")
response.write(nUsers.count)
howmany = nUsers.test
response.write("<br>")
response.write(howmany)
end sub
sub testit(Src as object, E as EventArgs)
Dim nUsers As New Users
Dim nUser As User
nUser = New User(emailin.text,userin.text)
nUsers.ValidateEmail(emailin.text)
dim xx as integer
xx = nUsers.Addx(nUser)
response.write("<br>")
response.write(xx)
response.write("<br>"+ nUser.username+"<br>"+ nUser.EmailAddress)
end sub
</script>
======
When I press 'Insert' I don't see an updated count . I'm also getting
a return code of 1 for ADDX.
What's wrong? Other than my not know what the hell I'm doing - New to
VB here.
