when i just leave this code like this below
dropdownPay.Items.Insert(1, new ListItem("VT", "2"));
I see value 2 several times on the dropdown.. to prevent this I need to check and see if value 2 is in already in dropdown that time not make that insertion otherwise put that code above ,,
because everything code hits that without checking if 2 already in dropdown it inserts. how can I prevent this.. need that in c# web development asp.net
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