Very handy thanks: Here is something similar translated into VB for those who use it. The main difference is I set the column header to blank in certain circumstances and am not checking that it has a parent row as instead I check for the presence of a particular column

    Public Sub AfterCreateChildElements(ByVal uiElement As Infragistics.Win.UIElement) Implements Infragistics.Win.IUIElementCreationFilter.AfterCreateChildElements

       'Are we on a UI element?

        If uiElement Is Nothing Then

            Exit Sub

        End If

       'Is the UI element a text element so we can change the text?

        If Not uiElement.GetType().Equals(GetType(TextUIElement)) Then

            Exit Sub

        End If

        'Grab the band header element. 

        Dim HeaderUI As HeaderUIElement

        HeaderUI = uiElement.GetAncestor(GetType(HeaderUIElement))

        If HeaderUI Is Nothing Then

            Exit Sub

        End If

        ' find the row associated.

        Dim row As UltraGridRow = CType(uiElement.GetContext(GetType(UltraGridRow)), UltraGridRow)

        ' just to be safe

        If row Is Nothing Then

            Exit Sub

        End If

        'Do the necessary formatting so the bottom child group does not show any column header text, as the data will always be not editable and blank.

        If row.Cells.Exists("CategoryId") = True Then

            If row.GetCellValue("CategoryId") = 5 Then

                If CType(HeaderUI, HeaderUIElement).Header.Column.Key = "Actual" Or CType(HeaderUI, HeaderUIElement).Header.Column.Key = "ActualNext" Then

                    CType(uiElement, TextUIElement).Text = ""

                End If

            End If

        End If

    End Sub

Thanks a lot Mike. Thats perfect.

Hi,

Nah, the version is not relevant. It's my fault, I didn't even notice that. The BandHeadersUIElement contains all of the headers - band and column.

Anyway, here's the right way to do it:

void IUIElementCreationFilter.AfterCreateChildElements(UIElement parent)
        {
            TextUIElement textElement = parent as TextUIElement;
            if (null == textElement)
                return;

            HeaderUIElement headerUIElement = textElement.GetAncestor(typeof(HeaderUIElement)) as HeaderUIElement;
            if (null == headerUIElement)
                return;

            if (false == (headerUIElement.Header is BandHeader))
                return;

            UltraGridRow row = headerUIElement.GetContext(typeof(UltraGridRow)) as UltraGridRow;
            if (null == row)
                return;

            UltraGridRow parentRow = row.ParentRow;
            if (null == parentRow)
                return;

            // If we get here, it means that we are creating a text element for a band header
            // in a child band. So set the text of the element based on the parent row. 
            textElement.Text = parentRow.Cells["Column 1"].Text;
        }

Thanks Mike. Thats very close to what I want.

When I run it though, it also changes the headers of the columns. Which seems odd, seeing as though it seems to be checking that it is the BandHeadersUIElement before going any further.

I had to downgrade the project to v12.1. That wouldnt effect that would it?

Hi,

As CreationFilters go, this is a pretty simple one. So I whipped up a quick sample project that changes the caption of the band header on the child band based on a value in the parent row.