<asp:DataList ID="DataList1" runat="server" DataKeyField="PD_ID" OnItemCommand ="DataList1_OnItemCommand" DataSourceID="sdsEnquiries">
                <ItemTemplate>
                    <h2>Enquiry details</h2>
                    <ul class="left patientInfo">
                        <li>
                            <label>Title</label>
                            <asp:Label ID="PD_TitleLabel" runat="server" Text='<%# Eval("PD_Title") %>' />
                        </li>
                        <li>
                            <label>First Name</label>
                            <asp:Label ID="PD_FirstNameLabel" runat="server" Text='<%# Eval("PD_FirstName") %>' />
                        </li>
                        <li>
                            <label>Last Name</label>
                            <asp:Label ID="PD_LastNameLabel" runat="server" Text='<%# Eval("PD_LastName") %>' />
                        </li>
                        <li>
</ul>
</ItemTemplate>

 <asp:Button ID="Button1" runat="server" Text="Promote as Enquiry" CommandName ="PromoteAsEnquiry" OnClick="btnPromote_Click" CssClass="htmlbutton" />

if (e.CommandName == "PromoteAsEnquiry")
        {
            DataListItem row = DataList1.Items[e.Item.ItemIndex];

            DropDownList ddlTitle = (DropDownList)row.FindControl("PD_TitleLabel");
            Label lblFirstName = (Label)row.FindControl("PD_FirstNameLabel");
            Label lblLastName = (Label)row.FindControl("PD_LastNameLabel");

            Session["title"] = ddlTitle.Text;
            Session["firstname"] = lblFirstName.Text;
            Session["lastname"] = lblLastName.Text;

            Response.Redirect("EnquiryMaintenance.aspx");
        }


    }

EM_ddlTitle.Text = Session["title"].ToString();
            lblEM_FirstName.Text = Session["firstname"].ToString();
            lblEM_LastName.Text = Session["firstname"].ToString();