I have never seen this control before but I looked at it now.
From reading the file /DesktopModules/Admin/Security/Membership.ascx.cs

It seems that you have to bind an object to that control.
In your case:
protected void Page_Load(object sender, EventArgs e)
{
DotNetNuke.Services.Installer.Packages.PackageInfo Package = new DotNetNuke.Services.Installer.Packages.PackageInfo();
extensionForm.DataSource = Package;
if (!IsPostBack)
{
extensionForm.DataBind();
}
}

Then when someone hits the update button, they get the object back:

DotNetNuke.Services.Installer.Packages.PackageInfo Package = extensionForm.DataSource as DotNetNuke.Services.Installer.Packages.PackageInfo;

And then run insert statements. You could probably load an existing object from the database and bind that to the form too then run update.

---

Hristo Evtimov
www.packflash.com

For validation you could use a regular expression like so:

<dnn:DnnFormTextBoxItem ID="extensionName" runat="server" DataField="Name" Required="true" ValidationExpression="[a-zA-Z]*" />

I had problems getting the combo box to work.
I added the following to the initial form you had:

<dnn:DnnFormComboBoxItem ID="email" runat="server" DataField="Email" ListTextField="Email" ListValueField="Email"></dnn:DnnFormComboBoxItem>

and then tried to bind that form in the code-behind:
foreach (DnnFormItemBase formItem in extensionForm.Items)
{
if (formItem.ID == "email")
{
((DnnFormComboBoxItem)formItem).ListSource = UserController.GetUsers(0);
if (!IsPostBack)
{
((DnnFormComboBoxItem)formItem).DataBind();
}
break;
}
}

All that works but I was not able to get the value of the drop down once someone clicks the update button. Value is always null. Maybe someone can help with this.

---

Hristo Evtimov
www.packflash.com