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Conditionally add checkbox to a row in a listview

Charles R Hankey — Fri, 30 Oct 2009 11:39:53 GMT

Need some help clarifying my thinking. i am presenting the user with a listview of PDFForms. They are loaded from a BO. Bo.PDFstatus determines if this PDF is optional - i.e. user can select it - while all others are included by default and cannot be unincluded.

I have a PDFSelected boolean (bit) field in the PDFbo. When the user gets done with the list I want to process all the PDFs from this BO, including any that are selected in the list and all those that are required.

If I want to handle this in one listview, can I conditionally have a checkbox only on the optional rows?? Should that be added somehow in rowpopulating and should they be attached to the PDFSelected or to the PDFName - first column of list. ?

In order to do this, do I need to populated the listview manually or can I still do a copydatafrom ?

I know how to updatae PDFBO from the listview selection once choices are made (that's why I'm not using new Stratalistview as there doesn't seem to be SelectedIndex expose )

Any thoughts appreciated, very much under the gun on this :w00t:

RE: Conditionally add checkbox to a row in a listview

Charles R Hankey — Fri, 30 Oct 2009 11:39:53 GMT

Thanks guys. I think today I will use Edhy's approach, just because the list is already a standard list view and I can give everyone a checkbox and then kill the click for those that are required and checked by default.

But next week I'll retrofit this with a Stratalistview.

Trent, I think Greg's issue was using the code you gave me for moving rows, which works quite well with listview but chokes in Stratalistview singe SelectedIndex(0) doesn't seem to be a meaningful concept. could you give an example of doing that row moving thing with Stratalistview ( which, once again, is VERY COOL! :D )

RE: Conditionally add checkbox to a row in a listview

Edhy Rijo — Fri, 30 Oct 2009 10:24:16 GMT

Hi Charles,

If you are using the current Listview, you could also handle the ItemChecked event and validate it so if the user uncheck a required item, you simply check it again, here is a sample:
[quote]
Private Sub lstPayments_ItemChecked(ByVal sender As System.Object, ByVal e As System.Windows.Forms.ItemCheckedEventArgs) Handles lstPayments.ItemChecked
If Me.bizPayments_Daily.PaymentStatus = Enumerations.PaymentStatus.Paid Then
If e.Item.Checked = False Then
e.Item.Checked = True
End If
End If
End Sub
[/quote]

Of course you can do it in a single line like e.Item.Checked = MyBO.RequiredConditionField = True

RE: Conditionally add checkbox to a row in a listview

Trent L. Taylor — Fri, 30 Oct 2009 08:48:24 GMT

[quote]want to handle this in one listview, can I conditionally have a checkbox only on the optional rows??[/quote]

On the new StrataListView, yes. Inherited and enhance list SF ListView, no.

[quote]
I know how to updatae PDFBO from the listview selection once choices are made (that's why I'm not using new Stratalistview as there doesn't seem to be SelectedIndex expose )[/quote]

Sure there is. I had a conversation with Greg through PM the other day and he was really wanting a SelectedIndices collection to be exposed. And though I will add this so people can retro fit code more easily, you don't need it. In the case of a checked list item on the new StrataListView, just call the GetCheckedItems() method and supply the column from which you are trying to get the checked items. It will return a collection of all of the items checked within that column without the need to deal with any index positioning or manualy enoerating the list.

[codesnippet]foreach(StrataListViewItem i in sfListView.GetCheckedItems(1))
{
//-- It will return the full row, not just the sub-item. But only items with the checked box selected in the 2nd column in this example, will be returned
}[/codesnippet]