Select loop

[Alex Lawson]

I have upgraded a listbox to the new verison, looks good but there is an issue with the selected flag.

Scenario: The list box has 2 items (a & b).  I have selected item a via a mouse click and clicked the transfer button, then run the following code:

        protected void lbxAssigned_Transferred(object sender, RadListBoxTransferredEventArgs e)
        {
            foreach (RadListBoxItem listItem in lbxAvailable.Items)
            {
                if (listItem.Selected)
                {
                    ProductCarriers objPC = new ProductCarriers();
                    string test = listItem.Text;
                    objPC.Allocate(Convert.ToInt32(listItem.Value), Convert.ToInt32(cbxProducts.SelectedValue));
                }
            }
            PopulateLists();
        }

However when I debug the loop the first iteration (item a) passes the selection check, but the listitem.text and listitem.value are from item b.

I will attempt to code this another way for the moment, thought you would want to be aware.

Thanks,
Lee

[ManniAT]

Hi Alex,

to be sure that I understood what you explained.
You have 2 listboxe - the first has two items and is named lbAvailable - the second is named lbxAssigned.
So at the start it looks like this
lbAvailable         lbxAssigned
a
b

After you transfer it looks like:
lbAvailable         lbxAssigned
b                          a

Markup (I know you are databound) may look like this:

<telerik:RadListBox ID="lbAvailable" runat="server" AllowTransfer="true" TransferMode="Move" TransferToID="lbxAssigned" >
<Items>
<telerik:RadListBoxItem runat="server" Value="1" Text="a" />
<telerik:RadListBoxItem runat="server" Value="2" Text="b" />
</Items>
</telerik:RadListBox>
<telerik:RadListBox ID="lbxAssigned" runat="server" ontransferred="lbxAssigned_Transferred">
<Items>
</Items>
</telerik:RadListBox>

If this is correct - your code - and the RadListboxes work like they should!!
In your code which handles the transfer to lbxAssigned - you query what is in lbxAvailable.
And this is item B which gets selected after item I is transfered.
--(check in the samples or remove "autoupdate" temporarily) you will see that the "next item" is selected.

So what you get is what it is - you query item b from the first (lbAvailable) listbox.
Try to iterate through lbxAssigned - now you should get item a (not selected).

Regards

Manfred

[Alex Lawson]

Ah I see, thanks - evidentally I have picked the wrong event.

I would have expected to selected flag to be cleared after transferred has fired though :)

[ManniAT]

Hi,

not the wrong event -- the wrong listbox.

foreach(.....in lbxAvailable)...
should be
foreach(.....in lbxAssigned)

And by the way (regarding to your sample) - b (or in general a newly transfered item) is NOT selected.

Cheers

Manfred
PS: If this solved your problem - please mark the post as answer.

[Alex Lawson]

No this is the correct listbox in the context of what the code is trying to achieve, this is legacy code I am trying to upgrade to the Telerik Listbox, unfortunatly the telerik listbox does not seem to behave as per the control set I am trying to replace therefore I will recode the whole thing.

Thanks,
Lee

[ManniAT]

Hi Lee,

sorry about that "wrong listbox" - since you didn't argue about my first post I thought my (assumed) code was fitting your situation.

Cheers

Manfred

[Alex Lawson]

No problem, I have fixed my code by simply looping through the RadListBoxTransferredEventArgs.items instead.  I hate legacy code but it has to be done.

Thanks for your help.

[ManniAT]

I hate legacy code too - but currently I have positive feelings about it.
My current project is to "rebuild" a .NET 1.x (yes ONE) datalist, datarepeater project to 3.5 with telerik controls.
Every phone call with my customer makes me happy :)
Oh great, so fast, so beautiful...oh, it automatically handles that error, aah, the page does not reload when i save...