Re: How do i set ItemSource in the following situation?

lexius — Tue, 06 Jan 2009 02:14:56 GMT

unfortunately that didn't work john, I get strange results for example:

I have 4 records in the database, this should result in 4 Custom Controls being displayed: one representing data for each record.

I get 4 Custom controls but each control has the data (ie bubbleName) for each record, so for each custom control displayed its showing bubbleName 4 times.

I am assuming its binding the whole collection to each separate control.

If anyone can suggest anything (even if they are unsure) i would be most grateful, this is my last major issue with this application, the rest should be plain sailing if i can solve this.

many thanks in advance.

Re: How do i set ItemSource in the following situation?

lexius — Mon, 05 Jan 2009 16:11:09 GMT

thanks for the reply john,

I havent managed to test it yet as my database seems to be returning 3000+ records, even though the table is showing as empty).. worked ok last night- so just have to sort that before i can test your code.

But anyway, do i need to set the DataContxt too- as i havent done so yetyet?

if so? does it matter where?

ie in the page.xaml:

      <UserControl.Resources>
       <bubbleData:bs_bubble x:Key="bs_bubbleDS" d:IsDataSource="True"/>
   </UserControl.Resources>

or in Generic.xaml, not sure eof the syntax for that.

Re: How do i set ItemSource in the following situation?

prujohn — Mon, 05 Jan 2009 15:20:17 GMT

You may try this option:

In xaml for both of your UserControls, set the propety of ItemsSource like so:

ItemsSource="{Binding}"

Now in your code behind, set the Datacontext property of your UserControl to the collection:

this.DataContext = items;

Your ItemsControls should then automatically use the UserControl datacontext for their databinding (using DataContext of nearest parent element).

How do i set ItemSource in the following situation?

lexius — Mon, 05 Jan 2009 05:06:29 GMT

Hi,

im trying to set the ItemSource for ItemsControl, I think this is only possible to do in code as I need to bind them to a collection. Just about all the examples i can find show you how to do this while using a listbox or gridview. in which case its easy as these objects are already exist on the page when you write the code in c#.

(I realise the code may look a little strange, I'm not 100% I am doing this the correct way. ( ie there is probably a better way to have it just so I can set 1 itemSource not 2) But i do need these 4 Text controls grouped, as they all display data from the same record- visualy grouped in an rectangle. So each record in the ObservableCollection will display this same rectangle custom control.

But, because im using a custom control (generated from Generic.xaml) then the control isnt on the page until after the code runs, so the 2 statements i have below wont compile. Im not even sure it can be written like this in code, as a datagrid/list box is one item to bind to but the way i have my code there could be hundreds or separte conrols on the screen, representing 1 record each.

C# code on page.xaml

ObservableCollection<bs_bubble> items = new ObservableCollection<bs_bubble>();
foreach (bs_bubble r in bs_bubble)
{
         items.Add(r);

    create_bubble(r.bubble_id, r.bubbleName, r.bubbleDesc, (double)r.sizeY, (double)r.opacity);
    }

this.itemsControlBubleName.ItemsSource = items;

this.itemsControlEdit.ItemSource =items;

//applicationRoot.DataContext = r;

Section of xmal from Generic.xmal

Programming with .NET - General

Re: How do i set ItemSource in the following situation?

Re: How do i set ItemSource in the following situation?

Re: How do i set ItemSource in the following situation?

How do i set ItemSource in the following situation?