Hello javiguti,

I have found out the reason for this behavior. It is casued by two things:

1. You would have to explicitly set the AllowNull to True on the UltraCombo control.

2.You shouldn't set the AlwaysInEditMode to True, because this prevents the NullText to be displayed.

I have made this two modification in the code below:

Form f = new Form();
 UltraCombo uc = new UltraCombo();
 uc.AllowNull = Infragistics.Win.DefaultableBoolean.True; 
uc.NullText = "Null Text"; 
uc.Value = null; 
uc.Location = new Point(1, 1); 
UltraButton b = new UltraButton(); 
b.Location = new Point(1, 30); 
f.Controls.Add(b); 
f.Controls.Add(uc); 
f.ShowDialog(); 

Please feel free to let me know if you have any other questions with this matter.

Hello javiguti,

I have created a case for you where I will investigate this sceanrio further for you.

The case number is: CAS-73442-0MH3VP

I will update you through the case.

If you have any other questions please feel free to let us know.

Thanks Mike, I got this working but in order to replicate the NullText behaviour and still accept keyboard input in the control I had to implement with Leave, Enter and ValueChanged events which is quite cumbersome for a simple thing. Thanks for the reply although not sure I understand why the property works only in DropDownList style