i try to add dropdown in repeater

code is

  cellspacing="0" id="results">
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  Text='<%# Eval("ApproveID") %>' Visible = "false" />

 
 EnableViewState="true" class="vpb_dropdown"

DataTextField="ApproveType"

DataValueField="ApproveID" AutoPostBack="true"

OnSelectedIndexChanged="DropDownList4_SelectedIndexChanged">

   Value="3">

   Value="1">

   Value="2">
 
 
 
 

  DocumentID
 
  DocName
 
  File Name
 
  Document
 
  Department
 
  Status
 
 

 
  <%#DataBinder.Eval(Container.DataItem, "DocID")%>
 
 
  <%#DataBinder.Eval(Container.DataItem, "DocName")%>
 
 
  <%#DataBinder.Eval(Container.DataItem, "Uploadfile")%>
 
 
  <%#DataBinder.Eval(Container.DataItem, "DocType")%>
 
 
  <%#DataBinder.Eval(Container.DataItem, "DepType")%>
 
  Text='<%# Eval("ApproveID") %>' Visible = "false" />
  <%#DataBinder.Eval(Container.DataItem, "ApproveID")%>