<table>
            <tr>
                <td>Name</td>
                <td>
                    <asp:TextBox ID="txtName" runat="server" CssClass="textBox" AutoPostBack="true"></asp:TextBox>
                    <asp:RequiredFieldValidator ID="reqName" runat="server" Text="*" ControlToValidate="txtName" ValidationGroup="trade" ForeColor="White"></asp:RequiredFieldValidator>
                </td>
            </tr>
            <tr>
                <td>Address</td>
                <td>
                    <asp:TextBox ID="txtAdd1" runat="server" CssClass="textBox"></asp:TextBox>
                    <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" Text="*" ControlToValidate="txtAdd1" ValidationGroup="trade" ForeColor="White"></asp:RequiredFieldValidator>
                </td>
            </tr>
            <tr>
                <td></td>
                <td>
                    <asp:Button ID="btnSubmitEnquiry" runat="server" CssClass="buttonText" Text="Submit Enquiry" ValidationGroup="trade" />
                </td>
            </tr>
        </table>

        <ajax:ModalPopupExtender ID="ModalPopupExtender1" runat="server" okcontrolid="lnkCancel" targetcontrolid="btnSubmitEnquiry" popupcontrolid="pnlConfirm"
            popupdraghandlecontrolid="PopupHeader" drag="true" ></ajax:ModalPopupExtender>

        <asp:Button Text="targetbutton" ID="btnConfTgt" runat="server" Style="display: none" />

        <asp:Panel ID="pnlConfirm" style="display:none" runat="server">
            <div class="PopupContainer">
                <div class="PopupBody">
                    <br />
                    <div align="center">
                        <asp:label ID="Label1" runat="server" CssClass="lblConfirmpopup">
                            Message goes here
                        </asp:label>
                    </div>
                    <br /><br /><br />
                    <div align="center">
                        <asp:LinkButton ID="lnkCancel" runat="server" visible="true" Text="Cancel" CommandName="Update" BorderColor="#FFFFFF" BackColor="#000000"
                            BorderWidth="3" BorderStyle="Double" ForeColor="White" Font-Size="13pt" Font-Underline="False"></asp:LinkButton>
                        <asp:LinkButton ID="lnkConfirm" runat="server" visible="true" Text="Submit Enquiry" CommandName="Update" BorderColor="#FFFFFF" BackColor="#000000"
                            BorderWidth="3" BorderStyle="Double" ForeColor="White" Font-Size="13pt" Font-Underline="False" OnClick="btnSubmitEnquiry_Click"></asp:LinkButton>
                    </div>
                </div>
            </div>
        </asp:Panel>