Hi,

There's no way to do this. The current AutoCompleteMode functionality will only search the DisplayMember column.

Also, the FilterRow is not currently supported for UltraCombo or UltraDropDown. You can turn on the filter icons for the column headers, but this will require a click, so I don' think that is what you want.

The only way to achieve this that I can see would be to create your own DropDown control. You could do this using UltraTextEditor with a DropDownEditorButton on the ButtonsRight collection that contains a WinGrid. Then you could handle the key event of the UltraTextEditor and do the auto-complete yourself.

It's not trivial, but it seems like it can be done. Here's a KB article that describes the basic technique of using the UltraTextEditor and the grid with a dropdown button. This article is doing it to get multi-select functionality, which is not what you want, but the basic approach is the same.

HOWTO:Creating a Multi-Select Dropdown Combo for the WinGrid

http://dandouglas.wordpress.com/2010/03/05/class-to-add-instant-as-you-type-filter-functionality-to-infragistics-ultracombo-control/

Basically implementing autocomplete by hand over every column.  It's probably inefficient as hell since we have to search through EVERY VISIBLE CELL, but it fulfills the requirement.  Plus, the fields where this functionality will be enabled on are mainly code/description fields, so it shouldn't have a ton of data.

Here's the meat of our DoPartDropDownFilter (which we named ApplyFilter).  It is embedded in our ComboBox that inherits UltraCombo.  We override OnKeyUp and OnAfterCloseUp to apply/clear the filter:

foreach (Infragistics.Win.UltraWinGrid.UltraGridRow row in this.Rows)
{
    bool filterRow = true;
    foreach (Infragistics.Win.UltraWinGrid.UltraGridColumn column in this.DisplayLayout.Bands[0].Columns)
    {
        if (column.IsVisibleInLayout)
        {
            if (row.Cells[column].Text.Contains(this.Text))
            {
                filterRow = false;
                break;
            }
        }
    }
    if (filterRow)
    {
        row.Hidden = true;
    }
    else
    {
        row.Hidden = false;
    }
}

Any better ways of handling this that you can think of?

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