In my vb.net 2008 Project, I am binding dataset (that include ItemID and ItemName) to combo box (ItemID to ValueMember and ItemName to DisplayMember) that use zaw gyi unicode font. Then i set Auto Complete Mode property of Combo box to "SuggestAppend" and AutoCompleteSource property of Combo box to ListItems. Whenever i choose one of list item then keydown, the Selected Value of that combo box is automatically change to another value and also item. How can i do that ? Please help me everyone.