<asp:GridView ID="GridView1" runat="server" DataKeyNames="EmpId"
AllowPaging="True" >
asp:GridView>
GridViewUpdateEvent(update)
com.Parameters.AddWithValue("@Status", ((TextBox)GridView1.Rows[e.RowIndex].Cells[2].Controls[0]).Text.ToString());
.Cs
com.Parameters.AddWithValue("@Status", ((DropDownList)GridView1.Rows[e.RowIndex].Cells[2].Controls[0]).Text.ToString());

Satyapriya NayakPosted Dec 14, 2013, 7:51 AM
http://technico.qnownow.com/use-dropdownlist-in-asp-net-gridview-control/
http://www.highoncoding.com/Articles/169_DropDownList_Inside_GridView__Method_1_.aspx
http://www.aspnettutorials.com/tutorials/controls/dropdownlist-gridview-csharp/