Send email to multiple users selected in gridview using asp.net (C#, VB)

Introduction: In this article I will explain how to send email to multiple users selected in gridview using asp.net (C#, VB)

Description:

Html Markup Of page:
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
<asp:GridView ID="Gridview1" runat="server">
<HeaderStyle Font-Bold="true" />
<Columns>
  <asp:TemplateField>
            <ItemTemplate>
                <asp:CheckBox ID="chkSelect" runat="server" />
            </ItemTemplate>
        </asp:TemplateField>
</Columns>
</asp:GridView>
</div>
<asp:Button ID="btnSend" Text="Send Mail" runat="server" OnClick="btnSend_Click" />
    </div>
    </form>
</body>
</html>


C# Code:
using System.Data;
using System.Net.Mail;
using System.Text;


    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            BindGrid();
        }
    }

    protected void BindGrid()
    {
        DataTable dt = new DataTable();
        dt.Columns.Add("Id", typeof(Int32));
        dt.Columns.Add("Student Name", typeof(string));
        dt.Columns.Add("Email", typeof(string));
         dt.Rows.Add(1, "Vijay", "saklanivijay87@gmail.com");
        dt.Rows.Add(2, "Vijay Saklani", "saklanivijay@ymail.com");
        dt.Rows.Add(3, "John", "john@gmail.com");
        Gridview1.DataSource = dt;
        Gridview1.DataBind();
    }
   
    protected void btnSend_Click(object sender, EventArgs e)
    {
        foreach (GridViewRow gridrow in Gridview1.Rows)
        {
           CheckBox chk = (CheckBox) gridrow.FindControl("chkSelect");
            if (chk.Checked==true)
            {          
            string studentname = gridrow.Cells[2].Text.Trim();
            string Email = gridrow.Cells[3].Text.Trim();
        
            StringBuilder sb = new StringBuilder();
            sb.Append("Hi  " + gridrow.Cells[2].Text.Trim());
            sb.Append(",<br/>");
            sb.Append("<br/>");
            sb.Append("<b>Welcome to Articlemirror</b><br/>");
            sb.Append("<br/>");
            sb.Append("<br/>");
            sb.Append("<b>Thanks</b>,<br> Articlemirror");

            string body = sb.ToString();
            Sendemail(Email,studentname,body);
            }
            chk.Checked = false;
        }
    }

    public void Sendemail(string To, string RecipientName, string body)
    {
        MailMessage mail = new MailMessage("saklanivijay87@gmail.com", To);
        mail.Subject = "Test Email"  + RecipientName;
        mail.Body = body;
        mail.IsBodyHtml = true;
        SmtpClient smtp = new SmtpClient();
        smtp.Host = "smtp.gmail.com";
        smtp.Port = 587;
        smtp.Credentials = new System.Net.NetworkCredential("sender@gmail.com", "password");
        smtp.EnableSsl = true;
        mail.IsBodyHtml = true;
        smtp.Send(mail);
    }

VB Code:
Imports System.Data
Imports System.Net.Mail
Imports System.Text

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Not IsPostBack Then
            BindGrid()
        End If
    End Sub

    Protected Sub BindGrid()
        Dim dt As New DataTable()
        dt.Columns.Add("Id", GetType(Int32))
        dt.Columns.Add("Student Name", GetType(String))
        dt.Columns.Add("Email", GetType(String))
        dt.Rows.Add(1, "Vijay", "saklanivijay87@gmail.com")
        dt.Rows.Add(2, "Vijay Saklani", "saklanivijay@ymail.com")
        dt.Rows.Add(3, "John", "john@gmail.com")
        Gridview1.DataSource = dt
        Gridview1.DataBind()
    End Sub

    Protected Sub btnSend_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnSend.Click
        For Each gridrow As GridViewRow In Gridview1.Rows
            Dim chk As CheckBox = DirectCast(gridrow.FindControl("chkSelect"), CheckBox)
            If chk.Checked = True Then
                Dim studentname As String = gridrow.Cells(2).Text.Trim()
                Dim Email As String = gridrow.Cells(3).Text.Trim()

                Dim sb As New StringBuilder()
                sb.Append("Hi  " + gridrow.Cells(2).Text.Trim())
                sb.Append(",<br/>")
                sb.Append("<br/>")
                sb.Append("<b>Welcome to Articlemirror</b><br/>")
                sb.Append("<br/>")
                sb.Append("<br/>")
                sb.Append("<b>Thanks</b>,<br> Articlemirror")

                Dim body As String = sb.ToString()
                Sendemail(Email, studentname, body)
            End If
            chk.Checked = False
        Next
    End Sub

    Public Sub Sendemail(ByVal [To] As String, ByVal RecipientName As String, ByVal body As String)
        Dim mail As New MailMessage("saklanivijay87@gmail.com", [To])
        mail.Subject = Convert.ToString("Test Email") & RecipientName
        mail.Body = body
        mail.IsBodyHtml = True
        Dim smtp As New SmtpClient()
        smtp.Host = "smtp.gmail.com"
        smtp.Port = 587
        smtp.Credentials = New System.Net.NetworkCredential("sender@gmail.com", "password")
        smtp.EnableSsl = True
        mail.IsBodyHtml = True
        smtp.Send(mail)
    End Sub

Result:-
Send email to multiple users selected in gridview

Send email to multiple users selected in gridview

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