I have a text box in which a user may type a code and a dropdown list which has the description as the BindingSourceDisplayMember and the code as the BindingSourceValueMember. If the user enters a valid code in the text box, I would like the drop down list to show the description for that value. In the TextChanged method of the text box, I set the SelectedValue of the drop down list to the Text property of the text box. The display of the drop down list still does not change. What is the correct way to do this?

Similarly, if the user makes a selection from the dropdown list, I want the value of the text box to change. I put that code in the SelectedIndexChanged method of the drop down list but the value in the text box does not change.

Any suggestions?

Thanks.

Linda