The UltraCombo shows ONE column as I want to display it as 'normal' drop down. This column should span the entire width of the UltraCombo, otherwise it looks strange (when selecting items, the selection is cropped at the column border). No matter what I do, I cant accomplish this.

So I am not trying to resize the main grid column, I am trying to resize the drop down grid column.

Any suggestions?

Hm... are you saying that the dropdown is showing extra space in addition to the width of the column?

The default behavior of the combo is to size the DropDown to the columns automatically. So if you are getting extra space it's because you changed something.Like maybe you are setting the DropDownWidth property on the Combo. That's not what you need in this case, though. What you should do, instead, is change the width of the Column in the dropdown and let the dropdown itself size to the column - which it will do automatically unless you also changed the AutoSizeMode.

Yes, exactly. I need for the drop down to auto size to the container cell, and I need the drop down column to auto sixe to the drop down width.

Trying with the BeforeCellListDropDown now, will report on result.

Got it to work! Now if I only could find a place to read the width of the drop down button, I would be all set... ;-)

/G

Private Sub productTypesGroupsGrid_BeforeCellListDropDown(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinGrid.CancelableCellEventArgs) Handles productTypesGroupsGrid.BeforeCellListDropDown
        Dim tmpDD As Ultra
        Dim btnWidth As Integer = 20

        tmpDD = CType(e.Cell.EditorControlResolved, UltraCombo)
        If tmpDD IsNot Nothing Then
            tmpDD.DisplayLayout.Bands(0).Columns("Name").Width = e.Cell.Column.CellSizeResolved.Width - btnWidth
        End If

    End Sub

hedge58 said:

As I understand it, the UltraDropDown does not support Suggest functionality when used as EditorControl. So thats why I use the UltraCombo.

Okay, that's correct.

hedge58 said:

Now if I only could find a place to read the width of the drop down button, I would be all set...

The width of the button is not expose via any property, but I'm pretty sure it's a constant, so you could just hard-code a value.

Or, you could try to get it from the UIElement. This will only work if the button is visible on the screen, but that should not be a problem - I can't think of a case where BeforeCellListDropDown could fire when the button is not visible.

So you can get the ActiveCell in the grid and call GetUIElement on it, then use GetDescendant on that to get the button element and use it's Rect to determine the width.

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.

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