c# - Combo Box Asp.net having unwanted behaviour -

I have a control that expands the combo box object. This update updates the selected items based on the user in the text field.

In the online event of CombBox, the selected index is set to the appropriate item, however, after reaching its selected index it has returned to the previous value.

Any help would be greatly appreciated.

I would be happy to provide code and other information if it would help in better describing this problem.

Debug it and give a pause where you set the selected index and where you access it I can bet, that this code is going to be the first code installation code. Post your code and we can provide the solution.