Check thru listbox

[Rev]

Hi, anyone may help me in my Qn.

I have a text box and listbox. In my listbox, there is item tt i added in which consists of a, b, c, d. When I key in either one in textbox, it will nt appear in listbox unless the input is different. Can any1 direct me ?

[debasisdas]

Your question is bit confusing . can you post your code for reference of our experts.