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Free Trial ASP.NET 4.5.1 Hosting with ASPHostPortal.com :: How to Send Bulk Email Using ASP.Net 4.5

clock April 3, 2014 12:14 by author Kenny

In this article I’m going to explain about how to send bulk email using ASP.Net 4.5. Bulk email software is software that is used to send email in large quantities. Bulk mail broadly refers to mail that is mailed and processed in bulk at reduced rates. The term does not denote any particular purpose for the mail; but in general usage is synonymous with "junk mail". This tutorial we will use ASP.NET Web Page for provide the user interface for your Web applications, Grid View for enables you to select, sort, and edit values of a data source in a table where each column represents a field and each row represents a record, HTML Email Templates and Gmail SMTP Mail Server.

Let’s start to try this tutorial, for the first step you must create a new project.
Click "File" -> "New" -> choose "Project..." and then select web "ASP .Net Web Forms Application". Name it as "Bulk Email".
And now let’s see in the Design page “Default.aspx” design the web page as in the following screen:

This is code for Design Source (Default.aspx):
Default.aspx.cs

<%@ Page Title="Home Page" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true"
CodeBehind="Default.aspx.cs" Inherits="BulkEmail._Default" %>
<asp:Content runat="server" ID="FeaturedContent" ContentPlaceHolderID="FeaturedContent">
    <section class="featured">
        <div class="content-wrapper">
            <hgroup class="title">              
                <h2>Send Bulk email using asp.net</h2>
            </hgroup>
            <p>To learn more about ASP.NET
            </p>
        </div>
    </section>
</asp:Content>
<asp:Content runat="server" ID="BodyContent" ContentPlaceHolderID="MainContent">
       <h3>We suggest the following:</h3>
    <asp:Panel ID="Panel1" runat="server" Width="100%" ScrollBars="Horizontal">
    <p>
       <asp:Button ID="btnBind" runat="server" Text="View" OnClick="btnBind_Click" /> <asp:Label
ID="Label1" runat="server" Font-Bold="true" ForeColor="Green" Text="Total
Customers:">   
</asp:Label><asp:Label ID="lbltotalcount" runat="server" ForeColor="Red" Font
Size="Larger"></asp:Label> </p>
        <asp:Button ID="btnSend" runat="server" Text="Send" OnClick="btnSend_Click" />
        <asp:GridView ID="grvCustomers" runat="server"></asp:GridView>
    </asp:Panel>
</asp:Content>

In the Web.config file create the connection string as:
Web.config

<connectionStrings>   
<add name="ConnectionString"connectionString="Server=localhost;userid=root;password=;Database=
orthwind"providerName="MySql.Data.MySqlClient"/>      
</connectionStrings>


In the code behind file (Default.aspx.cs) write the code as:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

//Using namespaces 
using MySql.Data.MySqlClient;
using System.Configuration;
using System.Text;
using System.Net;
using System.Net.Mail;
using System.Data;

namespace BulkEmail
{
    public partial class _Default : Page
    {
        #region MySqlConnection Connection
        MySqlConnection conn = new
MySqlConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString);

        protected void Page_Load(object sender, EventArgs e)
        {
            Try
            {
                if (!Page.IsPostBack)
                {

                }
            }
            catch (Exception ex)
            {
                ShowMessage(ex.Message);
            }
        }
        #endregion
        #region show message
        /// <summary>
        /// This function is used for show message.
        /// </summary>
        /// <param name="msg"></param>
        void ShowMessage(string msg)
        {
            ClientScript.RegisterStartupScript(Page.GetType(), "validation", "<script
language='javascript'>alert('" + msg + "');</script>");
        }       
        #endregion
        #region Bind Data
        /// <summary>
        /// This display the data fetched from the table using MySQLCommand,DataSet and
MySqlDataAdapter
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void btnBind_Click(object sender, EventArgs e)
        {
            Try
            {
                conn.Open();
                MySqlCommand cmd = new MySqlCommand("Select
CustomerID,ContactName,Address,Phone,Email from customers", conn);
                MySqlDataAdapter adp = new MySqlDataAdapter(cmd);
                DataSet ds = new DataSet();
                adp.Fill(ds);
                grvCustomers.DataSource = ds;
                grvCustomers.DataBind();
                lbltotalcount.Text = grvCustomers.Rows.Count.ToString();
            }
            catch (MySqlException ex)
            {
                ShowMessage(ex.Message);
            }
            Finally
            {
                conn.Close();

            }
            btnBind.Visible = false;
        }
        #endregion
        #region Bulk email,GridView,gmail
        /// <summary>
        /// this code used to Send Bulk email 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void btnSend_Click(object sender, EventArgs e)
        {
            Try
            {
                lbltotalcount.Text = string.Empty;
                foreach (GridViewRow grow in grvCustomers.Rows)
               {
                    string strCustomerID = grow.Cells[0].Text.Trim();
                    string strContactName = grow.Cells[1].Text.Trim();
                    string strAddress = grow.Cells[2].Text.Trim();
                    string strPhone = grow.Cells[3].Text.Trim();
                    string strEmail = grow.Cells[4].Text.Trim();               

                    string filename = Server.MapPath("~/Event.html");
                    string mailbody = System.IO.File.ReadAllText(filename);
                    mailbody = mailbody.Replace("##NAME##", strContactName);
                    string to = strEmail;
                    string from = "[email protected]";
                    MailMessage message = new MailMessage(from, to);
                    message.Subject = "Auto Response Email";
                    message.Body = mailbody;
                    message.BodyEncoding = Encoding.UTF8;
                    message.IsBodyHtml = true;
                    SmtpClient client = new SmtpClient("smtp.gmail.com", 587);
                    System.Net.NetworkCredential basicCredential = newSystem.Net.NetworkCredential("[email protected]", "Password");
                    client.EnableSsl = true;
                    client.UseDefaultCredentials = true;
                    client.Credentials = basicCredential;
                    try
                    {
                        client.Send(message);
                        ShowMessage("Email Sending successfully...!" + strContactName + " &nbsp;");                                           
                    }
                    catch (Exception ex)
                    {
                        ShowMessage(ex.Message);
                    }
                } 
            }
            catch (MySqlException ex)
            {
                ShowMessage(ex.Message);
            }
            Finally
            {
                conn.Close();
            }
        }
        #endregion
    }
}


Finally, Bulk Sending an E-Mail Using ASP.NET 4.5 with HTML Email Templates and Gmail SMTP Mail Server.



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clock March 14, 2014 11:33 by author Diego

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