instance a user control with Code Behind.

iceman90289 · March 14th, 2009, 01:34 AM

heyheyhey its your favorite noob ever...

ok so i need to instance my user control using code behind... been at this for a couple hours almost ( i exceeded my rate of two lines of code per day )

here is what i got:

User Control Class:
(it spawns a messageSending type of application, just a txtbox, send button, and a list of friends...) here i am trying to create the control after the user clicks the "Compose" link

Code:

 
UserControls_SendToContactsPanel objPanel = new UserControls_SendToContactsPanel();
objPanel.Initialize();

in the Initialize() method is the following:

Code:

 
publicvoid Initialize()
{
string user = HttpContext.Current.User.Identity.Name.ToString();
string conString = WebConfigurationManager.ConnectionStrings["myHomeConnection"].ConnectionString;
DataContext db = newDataContext(conString);
MembershipUser myObject = Membership.GetUser();
string UserID = myObject.ProviderUserKey.ToString();
var friends = (from m in db.GetTable<FriendList>() where m.UserID == UserID select m.FriendID);

if (friends != null)
{
ListView1.DataSource = friends;
ListView1.DataBind();
}

}

it appears that ListView1 doesnt exist... so should i have called Init on the Page_Loaded event? im going to try that... if it doesnt work.. im out of ideas.

iceman90289 · March 14th, 2009, 01:42 AM

YESYESYES it worked!!!!
however...

where is it? it doesnt show up... the page reloads... but no messageSendingBox type thing... shows up?

TO THE GOOGLE MACHINE!!!

iceman90289 · March 14th, 2009, 02:33 AM

ok... no. i lied... im back to this:

Code:

 
UserControls_SendToContactsPanel objPanel = newUserControls_SendToContactsPanel();
objPanel.Initialize();

so ... yea. i really dont know whats going on there...

aparently Initialize() gets called before objectPanel's Listbox control is created.

Imar · March 14th, 2009, 05:20 AM

Rather than instantiating the controls yourself, look into LoadControl:
http://msdn.microsoft.com/en-us/libr...adcontrol.aspx

When you load controls using LoadControl they'll "catch up"' to get aligned with the page's life cycle.

Hope this helps,

Imar

iceman90289 · March 14th, 2009, 01:38 PM

thanks imar