Add one drop Down On a page after that add a following code in that code behind file
Source Code:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:DropDownList ID="Drop123" runat="server" OnSelectedIndexChanged="DropDownList1" AutoPostBack="True">
</asp:DropDownList>
</div>
</form>
</body>
</html>
Code Behind File Code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Mail;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindDropDownList();
}
}
protected void sendemail()
{
try
{
MailMessage mail = new MailMessage();
SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");
mail.From = new MailAddress("pallavitigerkiller@gmail.com");
mail.To.Add("p.waghmare@direction.biz");
mail.Subject = "Test Mail - 1";
mail.Body = "mail with attachment";
SmtpServer.Port = 587;
SmtpServer.Credentials = new System.Net.NetworkCredential("pallavitigerkiller@gmail.com", "tiger121");
SmtpServer.EnableSsl = true;
SmtpServer.Send(mail);
}
catch (Exception ex)
{
//display exception
}
}
protected void DropDownList1(object sender, EventArgs e)
{
string value = Drop123.SelectedValue;
if (value == "2")
{
sendemail();
}
}
private void BindDropDownList()
{
Dictionary<string, string> options = new Dictionary<string, string>();
options.Add("-1", "Select Option");
options.Add("1", "test");
options.Add("2", "dispose");
Drop123.DataSource = options;
Drop123.DataTextField = "value";
Drop123.DataValueField = "key";
Drop123.DataBind();
}
}
build the solution and check the output.
Source Code:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:DropDownList ID="Drop123" runat="server" OnSelectedIndexChanged="DropDownList1" AutoPostBack="True">
</asp:DropDownList>
</div>
</form>
</body>
</html>
Code Behind File Code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Mail;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindDropDownList();
}
}
protected void sendemail()
{
try
{
MailMessage mail = new MailMessage();
SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");
mail.From = new MailAddress("pallavitigerkiller@gmail.com");
mail.To.Add("p.waghmare@direction.biz");
mail.Subject = "Test Mail - 1";
mail.Body = "mail with attachment";
SmtpServer.Port = 587;
SmtpServer.Credentials = new System.Net.NetworkCredential("pallavitigerkiller@gmail.com", "tiger121");
SmtpServer.EnableSsl = true;
SmtpServer.Send(mail);
}
catch (Exception ex)
{
//display exception
}
}
protected void DropDownList1(object sender, EventArgs e)
{
string value = Drop123.SelectedValue;
if (value == "2")
{
sendemail();
}
}
private void BindDropDownList()
{
Dictionary<string, string> options = new Dictionary<string, string>();
options.Add("-1", "Select Option");
options.Add("1", "test");
options.Add("2", "dispose");
Drop123.DataSource = options;
Drop123.DataTextField = "value";
Drop123.DataValueField = "key";
Drop123.DataBind();
}
}
build the solution and check the output.
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