how to select rows that have same names in a column through dropdownlist

See more:

C#

ASP.NET

In one of my dropdownlist I sort and bind 'panch_name' column from a sql table. Some names that are same appear in consequetive rows. For instance, 'hari' appears in index 109 and again another 'hari' apears in index 110. If I select the first 'hari through 'selectedindexchanged()' it works. And again If I want to select another 'hari' thats in index110 , it is not entering the 'selectedindexchanged()' function area and so my purpose is not solved. I am unable to select the second 'hari' of index110. I have used the following code. I know something wrong is there. Can anyone help me out.

<asp:DropDownList ID="DropDownList2" runat="server"
          style="z-index: 1; left: 434px; top: 309px;  position: absolute; height: 20px; width: 145px"
          AutoPostBack="True" onselectedindexchanged="DropDownList2_SelectedIndexChanged"  >
    </asp:DropDownList>

Thanks.