How to pass variable to class using VB.Net in ASP.Net

How to pass variable value to a class asp.net

i have a page where user request to get password 

my code as follow

HTML

<form method="post" class ="register-form" action="#">
<div class="input-group">
<input type="text" name="user_login" id="username" class="form-control" placeholder="Registered Email Address">
</div>
<br>
<asp:button id="btnreset" runat="server" text="Get password" onclick="btnreset_Click"  cssclass="btn btn-primary btn-lg btn-block" /><br />
 <asp:label id="lblmsg" runat="server" text=""></asp:label>
</form>

code behind

public pass as string 
Protected Sub btnreset_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnreset.Click
        Dim id As String = Request.Form("user_login").ToString
        Dim constring As String = ConfigurationManager.ConnectionStrings("ConnectionString").ConnectionString
        Using con As New SqlConnection(constring)
            Try
                Dim ss As String = "select Password from users where Email_ID='" & id & "'"
                con.Open()
                Dim comm As New SqlCommand(ss, con)
                Dim dr As SqlDataReader = comm.ExecuteReader
                If dr.Read Then
                    pass = dr.Item(0)
                    sendmail()
                    lblmsg.Text = "You password has been sent."
                End If
                    'lblmsg.Text = fn.ToString & ln.ToString
            Catch ex As Exception
                lblmsg.Text = ex.Message.ToString
            Finally
                con.Close()
            End Try
        End Using
    End Sub
    Protected Sub sendmail()
        Dim sb As System.Text.StringBuilder = New System.Text.StringBuilder()
        sb.Append("Password Request")
        sb.AppendLine()
        sb.Append("E-mail Id - " + Request.Form("user_login").ToString)
        sb.AppendLine()
        sb.Append("your password is - " + pass)
       

        Dim m As Mail = New Mail()
        Dim ackmsg As String = String.Empty
        Dim status As Boolean = m.sendmail(sb.ToString(), "Password Request")

        If (status) Then
            ackmsg = "Your PAssword has sent successfully"
        Else
            ackmsg = "Sorry! An error has encountered. Please try again"

        End If
    End Sub

my class

using System;
using System.Collections.Generic;
using System.Web;
using System.Net.Mail;


/// <summary>
/// Summary description for Mail
/// </summary>
public class Mail
{
	public Mail()
	{
		//
		// TODO: Add constructor logic here
		//
	}

    public bool sendmail(string msgbody, string msgsub)
    {
        
        bool status=false;
        SmtpClient client = new SmtpClient("mysmtp.in", 25); //host and port picked from web.config
        client.EnableSsl = false;
        MailAddress from = new MailAddress("info@mysmtp.in", "Site Admin");
        MailAddress to = new MailAddress("yogesh.0650@gmail.com", "User");
        MailMessage message = new MailMessage(from, to);
        message.Body = msgbody; 
        message.Subject = msgsub;
        client.Credentials = new System.Net.NetworkCredential("info@mysmtp.in", "MYpassword");
        try
        {
            client.Send(message);
            status = true;
            return status; 
        }

        catch (Exception ex)
        {
            //Console.WriteLine("Exception is:" + ex.ToString());
            status = false; //or return the error by some other means, say on a label  
            return status;
        }

    }

    public bool sendmail(string msgbody, string msgsub, string emailto)
    {

        bool status = false;
        SmtpClient client = new SmtpClient("mysmtp.in", 25); //host and port picked from web.config
        client.EnableSsl = false;
        MailAddress from = new MailAddress("info@mysmtp.in", "Site Admin");
        MailAddress to = new MailAddress(emailto, "User");
        MailMessage message = new MailMessage(from, to);
        message.Body = msgbody;
        message.Subject = msgsub;
        client.Credentials = new System.Net.NetworkCredential("info@mysmtp.in", "MYpassword");
        try
        {
            client.Send(message);
            status = true;
            return status;
        }

        catch (Exception ex)
        {
            //Console.WriteLine("Exception is:" + ex.ToString());
            status = false; //or return the error by some other means, say on a label  
            return status;
        }

    }

   
}

i want use the second function in class and hoe to pass variable value from aspx.vb to class emailto

please help