<asp:DropDownList <big>AutoPostBack="true"</big> ID="drpstatus" Style="outline: 0" runat="server" SelectedValue='<%#Eval("status_value")%>'>
<asp:ListItem Text="Inactive" Value="0">
<asp:ListItem Text="Active" Value="1">
<asp:ListItem Text="Rejected" Value="2">
try this,
All the best :-)