thanks your attention but containerElement contains all element so its rectangle bigger than visible part of screen like 700x2200 or may be bigger. my viewed area is 700x500 or like that.

Hi Abdurrahmanoguz,

I tested this behavior with each View style of UltraListView. ContainerUIElement had not such a big width in any of my tests. Attached is the sample I tested this behavior with.

Please check my sample and let me know if you are facing the same issue.

If the project does not work correctly, this indicates either an issue possibly specific to your environment, or a difference in the DLL versions we are using. My test was performed using Infragistics for Windows Forms 2016 volume 2 with latest service release. So could you please let me know the exact version of Infragistics components, which you are using?

If the project does show the product feature working correctly, this indicates a possible issue in the code of your application. It will help if you can provide a small, isolated sample application that demonstrates the behavior you are seeing.

Alternatively, if this sample project is not an accurate demonstration of what you are trying to do, please feel free to modify it and send it back.

Looking forward to your reply.

Hi Milko,

your example works good on MouseEnterElement event. but i need to use it in a custom creation filter on AfterCreateChildElements event. because end-user look nothing until they are on the element.

as i wrote before i have custom creation filter to load image when they are fully visible (without waiting Mouse or keyboard interaction). so your example works fine on MouseEnterElement event but not in my custom filter class.

in this event containerElement gives a big rectanle (i think client area of list view) but  i need viewed part...

i am using VS 2010 with infragistics 15.1.20193 winforms

Public Sub AfterCreateChildElements(parent As UIElement) Implements IUIElementCreationFilter.AfterCreateChildElements

     If TypeOf parent Is UltraListViewItemUIElement Then

         Dim itemElement As UltraListViewItemUIElement = DirectCast(parent, UltraListViewItemUIElement)

         If itemElement IsNot Nothing AndAlso

             itemElement.Item IsNot Nothing AndAlso

             itemElement.Item.Appearance.Image Is Nothing AndAlso

             itemElement.IsFullyVisible Then

             Dim containerElement As UIElement = itemElement.Parent

             Dim margin As Integer = 1

             itemElement.Item.Appearance.Image = Me.GetThumbnail(itemElement.Item.SubItems("FilePath").Value.ToString())

         End If

         RaiseEvent ImageLoaded(itemElement.Item)

     ElseIf TypeOf parent Is UltraListViewIconicImageAreaUIElement Then

         Dim imageElement As ImageUIElement = TryCast(parent.GetDescendant(GetType(ImageUIElement)), ImageUIElement)

         If imageElement IsNot Nothing Then

             Dim rect As Rectangle = parent.Rect

            rect.Inflate(-4, -4)

            imageElement.Rect = rect

             imageElement.Scaled = True

         End If

     End If

End Sub

Hi Abdurrahmanoguz,

I am sending you same sample, this time in VB. I added the same Creation Filters as you did. When I debug the size of the container UIElement it never returns such big width. Please check my sample and let me know if you face this issue with it. Alsoр let me know which is the version you are using.

One more thing. If you cannot determine the most right end with container UIElement you may try to do this with scrollbar UIElements. Add these lines in your creation filter to get the most right part of the container

Dim controlElement As UltraListViewUIElement = itemElement.ControlElement
Dim scrollBarElement = DirectCast(controlElement.GetDescendant(GetType(ScrollBarUIElement)), ScrollBarUIElement)
 
Dim mostRightSide As Integer = 0
If scrollBarElement.Orientation = Orientation.Horizontal Then
    mostRightSide = scrollBarElement.Rect.Right
Else
    mostRightSide = scrollBarElement.Rect.Left
End If

Looking forward to your reply.