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?

Hi,

Okay... so what are you trying to autosize the column to? AutoSize means setting the width of the column based on the contents so you make sure all of the text in the column is visible to the user with no scrollbars. Is that what you want?

Or are you trying to make the column in the dropdown (and thus the dropdown itself) the same width as the grid column it's in?

Also... may I ask why you are using an UltraCombo? There are easier ways to provide a list in a grid cell.

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!