HOW TO SEND MUTIPLE EMAILS AT ONCE IN GMAIL WITH ATTACHMENT IN ASP.NET C#

HERE IN THIS .Net Tutorial WE WILL SEND MUTIPLE EMAILS AT ONCE IN GMAIL WITH ATTACHMENT IN ASP.NET C#

Step 1:- WebForm2.aspx.cs

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm2.aspx.cs" Inherits="WebApplication12.WebForm2" %>

<!DOCTYPE html>

</head>

<div>

<tr>

<asp:Label ID="Label1" runat="server" Text="Email Id :-"></asp:Label>

</td>

<td>

<asp:TextBox ID="TextBox1" runat="server" Width="450px"></asp:TextBox>

</td>

</tr>

<tr>

<asp:Label ID="Label4" runat="server">Subject :-</asp:Label>

</td>

<td>

<asp:TextBox ID="TextBox2" runat="server" Width="447px"></asp:TextBox>

</td>

</tr>

<tr>

<asp:Label ID="Label2" runat="server" Text="Text :-"></asp:Label>

</td>

<td>

<asp:TextBox ID="TextBox3" runat="server" Height="77px" TextMode="MultiLine" Width="446px"></asp:TextBox>

</td>

</tr>

<tr>

<asp:Label ID="Label3" runat="server" Text="Attachment :- "></asp:Label>

</td>

<td>

<asp:FileUpload ID="FileUpload1" runat="server" />

</td>

</tr>

<tr>

<td>

<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Submit" />

</td>

</tr>

<tr>

<td>

<asp:Label ID="Label5" runat="server" ForeColor="#33CC33"></asp:Label>

</td>

</tr>

</table>

</div>

</form>

</body>

</html>

Step 2 :- Create EmailModels In Side Folder Models

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

namespace WebApplication12.Models

{

public class EmailModels

{

public int id { get; set; }

public string email { get; set; }

}

Step 3 :- Create SqlDB.cs In Side Folder Models For All Database Connection

using System;

using System.Collections;

using System.Collections.Generic;

using System.Data;

using System.Data.SqlClient;

using System.Linq;

using System.Web;

namespace WebApplication12.Models

{

public class SqlDB

{

public const string CONST_USER_ID = "";

public string connStr = "Data Source=.;Initial Catalog=email;Persist Security Info=True;User ID=sa;Password=abc@123";

private SqlTransaction sqlTrans;

private SqlConnection sqlConn = null;

public SqlDB()

{

this.connStr = "Data Source=.;Initial Catalog=email;Persist Security Info=True;User ID=sa;Password=abc@123";

}

public void BeginTransaction()

{

sqlTrans = dbConnection.BeginTransaction();

}

public void CommitTransaction()

{

sqlTrans.Commit();

}

public void RollbackTransaction()

{

sqlTrans.Rollback();

}

public void CloseConnection()

{

dbConnection.Close();

}

private SqlConnection dbConnection

{

get

{

if (sqlConn == null)

{

sqlConn = new SqlConnection();

try

{

if (sqlConn.State == ConnectionState.Open)

sqlConn.Close();

sqlConn.ConnectionString = connStr;

if (sqlConn.State == ConnectionState.Closed)

{

sqlConn.Open();

}

catch (Exception)

{

}

return sqlConn;

}

public SqlDataReader getSqlDataReader(string strQuery, ArrayList alParams)

{

try

{

using (var con = new SqlConnection(connStr))

{

if (con.State == ConnectionState.Closed)

{

con.Open();

}

SqlCommand objCommand = new SqlCommand();

objCommand = new SqlCommand(strQuery, con, sqlTrans);

objCommand.CommandTimeout = 0;

objCommand.CommandText = strQuery;

foreach (SqlParameter param in alParams)

{

objCommand.Parameters.Add(param);

}

SqlDataReader sqlDR = objCommand.ExecuteReader();

objCommand.Parameters.Clear();

return sqlDR;

}

catch

{

return null;

}

public DataTable getDataTable(string strQuery, ArrayList alParams)

{

try

{

using (var con = new SqlConnection(connStr))

{

if (con.State == ConnectionState.Closed)

{

con.Open();

}

SqlCommand objCommand = new SqlCommand();

objCommand = new SqlCommand(strQuery, con, sqlTrans);

objCommand.CommandTimeout = 0;

objCommand.CommandText = strQuery;

objCommand.Parameters.Clear();

foreach (SqlParameter param in alParams)

{

objCommand.Parameters.Add(param);

}

SqlDataAdapter daSQL = new SqlDataAdapter(objCommand);

DataTable dt = new DataTable();

daSQL.Fill(dt);

objCommand.Parameters.Clear();

return dt;

}

catch (Exception)

{

return null;

}

public string runExecuteQuery(string strQuery, ArrayList alParams)

{

try

{

using (var con = new SqlConnection(connStr))

{

if (con.State == ConnectionState.Closed)

{

con.Open();

}

SqlCommand objCommand = new SqlCommand(strQuery, con, sqlTrans);

objCommand.CommandText = strQuery;

foreach (SqlParameter param in alParams)

{

//if (String.IsNullOrEmpty(param.Value.ToString()))

//{

// param.Value = DBNull.Value;

// objCommand.Parameters.Add(param);

//}

//else

//{

// objCommand.Parameters.Add(param);

//}

objCommand.Parameters.Add(param);

}

objCommand.ExecuteNonQuery();

objCommand.Parameters.Clear();

return "done";

}

catch (Exception ex)

{

return ex.Message;

}

//public DataTable getDataTable(string strQuery, ArrayList alParams)

//{

// try

// {

// SqlCommand objCommand = new SqlCommand(strQuery, dbConnection, sqlTrans);

// objCommand.CommandTimeout = 0;

// objCommand.CommandText = strQuery;

// foreach (SqlParameter param in alParams)

// {

// objCommand.Parameters.Add(param);

// }

// SqlDataAdapter daSQL = new SqlDataAdapter(objCommand);

// DataTable dt = new DataTable();

// daSQL.Fill(dt);

// objCommand.Parameters.Clear();

// return dt;

// }

// catch

// {

// return null;

// }

//}

public string ExecuteStoreProcedure(string strQuery, ArrayList alParams)

{

try

{

using (var con = new SqlConnection(connStr))

{

if (con.State == ConnectionState.Closed)

{

con.Open();

}

SqlCommand objCommand = new SqlCommand(strQuery, con, sqlTrans);

objCommand.CommandText = strQuery;

objCommand.CommandType = CommandType.StoredProcedure;

objCommand.CommandTimeout = 0;

foreach (SqlParameter param in alParams)

{

objCommand.Parameters.Add(param);

}

objCommand.ExecuteNonQuery();

objCommand.Parameters.Clear();

return "done";

}

catch (Exception ex)

{

return ex.Message;

}

finally

{

}

Step 4 :- Create BusinessLogic.cs In Side Model Folder

using System;

using System.Collections;

using System.Collections.Generic;

using System.Data;

using System.Data.SqlClient;

using System.Data.SqlTypes;

using System.Linq;

using System.Web;

namespace WebApplication12.Models

{

public class BusinessLogic

{

private string strSql = "";

private ArrayList alSQLParams = new ArrayList();

private SqlDateTime sqldatenull = SqlDateTime.Null;

public List<EmailModels> getemailDetail()

{

alSQLParams.Clear();

List<EmailModels> emaildetail = new List<EmailModels>();

strSql = "select * from emaillist with (nolock) order by id ";

DataTable dt = new SqlDB().getDataTable(strSql, alSQLParams);

if (dt != null)

{

for (int i = 0; dt.Rows.Count > i; i++)

{

EmailModels emailmenu = new EmailModels();

emailmenu.id = Convert.ToInt16(dt.Rows[i]["id"]);

emailmenu.email = dt.Rows[i]["email"].ToString();

emaildetail.Add(emailmenu);

}

return emaildetail;

}

Step 5:- C# Code

using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

using System.Net;

using System.Net.Mail;

using System.Text;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using WebApplication12.Models;

namespace WebApplication12

{

public partial class WebForm2 : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected void Button1_Click(object sender, EventArgs e)

{

var emailid = new BusinessLogic().getemailDetail();

foreach (var item in emailid)

{

using (MailMessage mm = new MailMessage(TextBox1.Text.ToString(), item.email.ToString()))

{

mm.Subject = TextBox2.Text.ToString();

mm.Body = TextBox3.ToString();

if (FileUpload1.HasFile)

{

string fileName = Path.GetFileName(FileUpload1.PostedFile.FileName);

FileUpload1.SaveAs(Server.MapPath("Files/"+fileName));

mm.Attachments.Add(new Attachment(Server.MapPath("Files/" + fileName)));

}

mm.BodyEncoding = Encoding.UTF8;

mm.IsBodyHtml = true;

using (SmtpClient smtp = new SmtpClient())

{

smtp.Host = "smtp.gmail.com";

smtp.EnableSsl = true;

NetworkCredential NetWorkCred = new NetworkCredential("[email protected]","abc");

smtp.UseDefaultCredentials = true;

smtp.Credentials = NetWorkCred;

smtp.Port = 587;

smtp.Send(mm);

}

Label5.Text = "Email Send.........................";

}

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