title: How to check if an item exists in the checkboxlist before adding an item to the checkboxlist?
body: <p>I have a checkboxlist and i am getting duplicate list items in the checkboxlist. I want to check if the particular item is exist in the checkboxlist before add an item. what is the optimized way to do this check?</p>
  
  <pre><code>&lt;asp:CheckBoxList runat="server" ID="chkboxlist"  CellPadding="5" CellSpacing="5" /&gt;
  
     chkboxlist.Items.Add("GEORGIA");
     chkboxlist.Items.Add("OHIO");
  </code></pre>
  
  <p>Before adding any state to the checkbox list , i want to check the state value is already exist in the checbox list. How to do that?</p>