password recovery

aspx page
<div style="height: 800px; width: 800px; vertical-align: middle;">
        <br />
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        <br />
        <br />
        <br />
        <br />
        <center>
            <asp:Panel ID="panel1" runat="server">
                <table>
                    <tr>
                        <td>
                            <asp:Label ID="EmailLabel" runat="server">E-Mail Id:</asp:Label>
                        </td>
                        <td>
                            <asp:TextBox ID="txtEmail" runat="server" CssClass="{txtcurcomp:true,textEntry}"
                                Height="25px" BorderColor="#666666" BorderStyle="Solid" BorderWidth="1px" Font-Size="Medium"
                                Width="300px"></asp:TextBox>
                            <asp:RequiredFieldValidator ID="EmailRequired" runat="server" ControlToValidate="txtEmail"
                                CssClass="failureNotification" ErrorMessage="E-mail is required." ToolTip="E-mail is required."
                                ValidationGroup="l1">*</asp:RequiredFieldValidator>
                        </td>
                    </tr>
                    <tr id="tr1" runat="server" visible="false">
                        <td align="right">
                            <asp:Label ID="Label1" runat="server">Username:</asp:Label>
                        </td>
                        <td align="left">
                            <asp:TextBox ID="txtUsername" runat="server" BorderColor="#666666" BorderStyle="Solid"
                                BorderWidth="1px"></asp:TextBox>
                        </td>
                    </tr>
                    <tr id="tr2" runat="server" visible="false">
                        <td align="right">
                            <asp:Label ID="Label2" runat="server">Password:</asp:Label>
                        </td>
                        <td align="left">
                            <asp:TextBox ID="txtPassword" runat="server" BorderColor="#666666" BorderStyle="Solid"
                                BorderWidth="1px"></asp:TextBox>
                        </td>
                    </tr>
                    <tr>
                        <td>
                        </td>
                        <td align="left">
                            <asp:Button ID="btnSubmit" runat="server" Text="Submit" ValidationGroup="l1" Height="28px"
                                Width="100px" OnClick="btnSubmit_Click" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                        </td>
                        <td>
                            Try&nbsp;&nbsp;<asp:LinkButton ID="LinkButton1" runat="server" PostBackUrl="~/AgentLogin.aspx">Login</asp:LinkButton>
                            &nbsp;Again
                        </td>
                    </tr>
                </table>
                <p style="margin-left: 200px; font-family: Cambria; font-size: medium; font-weight: bold;">
                    <asp:Label ID="lblmsg" runat="server" ForeColor="Green" />
                    <asp:Label ID="lblerrmsg" runat="server" ForeColor="Red" />
                </p>
            </asp:Panel>
        </center>
    </div>