I added a handler for the TextChanged event and it did NOT fire during the form load.  The control is not data bound and the initial text is empty.

The thing I find most intriguing is I have the same control loaded the same way on other forms and it works great, but there's something unique about this form.  I just can't figure out what it is!

Hi Scott,

According to this call stack, the control is processing a change in the Text property. In other words, something is changing the text of the control and it's trying to do auto-suggest, but it must be trying to do that too early.

What is the initial text in the control? Is anything in your code changing it in code or in the designer?

Is the control's Text or Value property bound?

Just as a text, try rapping the TextChanged event of the control and see if that fires when the form loads. If so, look at the call stack or the Text and maybe that will give us a hint where it's coming from.

This is from my Form Load:

IList<Company> theCompanies = serviceAP.GetCompanies();
theCompanyList = new ValueList();
foreach (var theCompany in theCompanies)
{
                theCompanyList.ValueListItems.Add(theCompany.ID, theCompany.Code + " - " +                  theCompany.Name);
}

theCompanyList.SortStyle = ValueListSortStyle.Ascending;
ultraComboEditorCompanyCode.ValueList = theCompanyList;

GetCompanies() just returns an IList of Company objects via NHibernate.  We are NOT multithreading.

The funny thing is, I copied the code and controls from a similar form and it works just fine there.  There's something specific to the new form that's causing the issue.  I can demonstrate via GoToMeeting if you're interested.

Scott