CType is "Convert to type". It's just like casting in C#.

So:

editorElem = CType(buttonElem.ChildElements(0), EditorWithComboUIElement)

is the same as:

editorElem = (EditorWithComboUIElement)buttonElem.ChildElements(0);

Thanks for the code example! I had to convert to C# though, as this project is using it (see below).

Also, I didn't know how to convert your Ctype methods above, so I just used a foreach loop, i'm sure there is something more elegant, but its probably doing the same thing anyway.

also, my situation was a little different, we put this code in all of our drop down controls (in grids and on forms) on the "BeforeDropDown" event, so we really don't have a handle to the UltraGrid, but the UIElement was available for us to use.

            Infragistics.Win.EditorWithComboUIElement editorElement = null;
            Infragistics.Win.EditorWithComboDropDownButtonUIElement comboElement = null;
            Infragistics.Win.EditorWithTextUIElement text = null;

            try
            {
                foreach (var element in UIElement.ChildElements)
                {


                    if (element is Infragistics.Win.EditorWithComboUIElement)
                        editorElement = (Infragistics.Win.EditorWithComboUIElement)element;
                }

                if (editorElement != null)
                {
                    foreach (var element in editorElement.ChildElements)
                    {
                        if (element is Infragistics.Win.EditorWithComboDropDownButtonUIElement)
                            comboElement = (Infragistics.Win.EditorWithComboDropDownButtonUIElement)element;

                        if (element is Infragistics.Win.EditorWithTextUIElement)
                            text = (Infragistics.Win.EditorWithTextUIElement)element;

                    }


                    if (comboElement != null)
                        buttonWidth = comboElement.Rect.Width;



                }



            }
            catch (Exception) { }

Here is a small code example of how I did it:

 Private Sub myGrid_BeforeCellListDropDown(ByVal sender As Object, _
                                                                   ByVal e As CancelableCellEventArgs) _
            Handles myGrid.BeforeCellListDropDown

Dim tmpDD As StandardDropDown 'This is actually an UltraCombo
Dim btnWidth As Integer = 20
Dim buttonElem As UIElement
Dim editorElem As EditorWithComboUIElement
Dim comboElem As EditorWithComboDropDownButtonUIElement

'Get ref to dropdown
tmpDD = CType(e.Cell.EditorComponentResolved, StandardDropDown)

            Try
                'Get UIElement from cell
                buttonElem = e.Cell.GetUIElement()
                'Get main editor element
                editorElem = CType(buttonElem.ChildElements(0), EditorWithComboUIElement)
                'Get actual editor (UltraCombo) element

                comboElem = CType(editorElem.ChildElements(0), EditorWithComboDropDownButtonUIElement)
                'Set button width to with of editor button width
                btnWidth = comboElem.Rect.Width + DROPDOWNBUTTON_WIDTH_COMP 'const to adjust width, it misses by a few pixels for some reason
            Catch
                Throw
            End Try

            If tmpDD IsNot Nothing Then
                'Adjust with of grid column in drop down
                tmpDD.DisplayLayout.Bands(0).Columns("Name").Width = e.Cell.Column.CellSizeResolved.Width - btnWidth
            End If

End Sub

Mike,

could you provide a small code example for what you described above? I too need to get the drop down button widths.

it seems to be different for grids and controls so if I can grab the actual value that would be preferred.

Thanks for the tip. I ended up using the ChildElements collection and drill down to the correct element. Then I used the Rect property to get the width. Works great. Thanks again!