what would be the code for the Button click to execute the method

public static string Newmember(string mname, int password, string email)
 {

     SqlConnection con = new SqlConnection(Database.ConnectionString);
     try
     {
         SqlCommand cmd = new SqlCommand("select isnull(max(mid),0)+1 from members", con);
         int mid = (int)cmd.ExecuteScalar();

         cmd.CommandText = "insert into members values(@mid,@mname,@password,@email)";
         cmd.Parameters.Add("@mid", SqlDbType.Int).Value = mid;
         cmd.Parameters.Add("@mname", SqlDbType.VarChar, 50).Value = mname;
         cmd.Parameters.Add("@password", SqlDbType.Int).Value = password;
         cmd.Parameters.Add("@email", SqlDbType.VarChar, 40).Value = email;
         cmd.ExecuteNonQuery();
         HttpContext.Current.Trace.Write("Member has been added successfully with ID = " + mid +"\n "+"your name is" +mname +" " +"your password is"+password+" "+"your email is "+ email);

     }
     catch (Exception ex)
     {
         HttpContext.Current.Trace.Write("error" + ex.Message);

     }
     finally
     {
         con.Close();
     }