Textbox and Dropdown controls in Datagrid

<asp:GridView AutoGenerateColumns="False" CssClass="grid" ID="gvEmployee" runat="server"
            EnableViewState="False" DataSourceID="sqlDsEmployee" Width="98%" AllowSorting="false"
            CellPadding="0" CellSpacing="0" AllowPaging="false" PageSize="5" PagerSettings-Mode="NumericFirstLast"
            ShowHeaderWhenEmpty="true" OnRowCreated="gvEmployee_RowCreated">
            <RowStyle CssClass="row" />
            <AlternatingRowStyle CssClass="altrow" />
            <Columns>
                <asp:TemplateField ItemStyle-CssClass="rownum" HeaderText="S.No">
                    <ItemTemplate>
                        <%# Container.DataItemIndex + 1 %>
                    </ItemTemplate>
                    <ItemStyle HorizontalAlign="Right" Width="4%" />
                </asp:TemplateField>
                <asp:TemplateField ItemStyle-CssClass="rownum" HeaderText="Emp No" SortExpression="Empno">
                    <ItemTemplate>
                        <asp:Label ID="lblEmpno" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Empno") %>'></asp:Label>
                    </ItemTemplate>
                    <ItemStyle HorizontalAlign="Right" Width="15%" />
                </asp:TemplateField>
                <asp:TemplateField ItemStyle-CssClass="rownum" HeaderText="Employee Name" SortExpression="Ename">
                    <ItemTemplate>
                        <asp:Label ID="lblEname" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Ename") %>'></asp:Label>
                    </ItemTemplate>
                    <ItemStyle HorizontalAlign="Left" Width="25%" />
                </asp:TemplateField>
                <asp:TemplateField ItemStyle-CssClass="rownum" HeaderText="Job Title" SortExpression="Job">
                    <ItemTemplate>
                        <asp:Label ID="lblJob" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Job") %>'></asp:Label>
                    </ItemTemplate>
                    <ItemStyle HorizontalAlign="Left" Width="20%" />
                </asp:TemplateField>
                <asp:TemplateField ItemStyle-CssClass="rownum" HeaderText="Salary" SortExpression="Sal">
                    <ItemTemplate>
                        <asp:Label ID="lblSal" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Sal", "{0:0.00}") %>'></asp:Label>
                    </ItemTemplate>
                    <ItemStyle HorizontalAlign="Right" Width="15%" />
                </asp:TemplateField>
                <asp:TemplateField ItemStyle-CssClass="rownum" HeaderText="Hire Date" SortExpression="HireDate">
                    <ItemTemplate>
                        <asp:Label ID="lblHireDate" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "HireDate", "{0:dd/MM/yyyy}") %>'></asp:Label>
                    </ItemTemplate>
                    <ItemStyle HorizontalAlign="Left" Width="15%" />
                </asp:TemplateField>
                <asp:TemplateField ItemStyle-CssClass="rownum" HeaderText="DepName" SortExpression="DNAME">
                    <ItemTemplate>
                        <asp:Label ID="lblDName" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "DNAME") %>'></asp:Label>
                    </ItemTemplate>
                    <ItemStyle HorizontalAlign="Left" Width="30%" />
                </asp:TemplateField>
                <asp:TemplateField ItemStyle-CssClass="rownum" HeaderText="Images">
                    <ItemTemplate>
                        <a rel="lightbox" href='<%#Server.MapPath("~/Styles/Images/Desert.jpg")%>' type="text/plain">
                            <asp:Image ID="imgTest" runat="server" ImageUrl='<%#Server.MapPath("~/Styles/Images/Desert.jpg")%>'
                                Width="30px" Height="30px" BorderWidth="0" />
                        </a>
                    </ItemTemplate>
                    <ItemStyle HorizontalAlign="Center" Width="10%" />
                </asp:TemplateField>
                <asp:TemplateField ItemStyle-CssClass="rownum" HeaderText="Update">
                    <ItemTemplate>
                        <asp:Button ID="btnUpdate" runat="server" Text="Update" CssClass="btn" OnClientClick="return ShowDetails(this);" />
                    </ItemTemplate>
                    <ItemStyle HorizontalAlign="Center" Width="10%" />
                </asp:TemplateField>
                <asp:TemplateField ItemStyle-CssClass="rownum" HeaderText="Delete">
                    <ItemTemplate>
                        <asp:Button ID="btnDelete" runat="server" Text="Delete" CssClass="btn" OnClientClick="return ShowDetails(this);" />
                    </ItemTemplate>
                    <ItemStyle HorizontalAlign="Center" Width="10%" />
                </asp:TemplateField>
                <%--<asp:TemplateField ItemStyle-CssClass="rownum" HeaderText="Test">
                    <ItemTemplate>
                       <%# Eval("DNAME") %>
                    </ItemTemplate>
                    <ItemStyle HorizontalAlign="Right" Width="4%" />
                </asp:TemplateField>--%>
            </Columns>
        </asp:GridView>