Email Sending in asp.net

using System.Net;

using System.Net.Mail;

private string MailFrom = "myMail@gmail.com";

private string MailPassword = "myPassword";

public string MailSubject { get; set; }

public string MailTo { get ; set;}

public string MailBody { get; set; }

public string Attachment { get; set; }

public void SendEmail()

        { 

            SmtpClient smtp = new SmtpClient("smtp.gmail.com", 587);

            smtp.UseDefaultCredentials = false;

            smtp.Credentials = new NetworkCredential(MailFrom, MailPassword);

            MailMessage msg = new MailMessage(MailFrom, MailTo);         

            Attachment att = new Attachment (Attachment);

            msg.Attachments.Add(att);

            msg.Subject = MailSubject;

            msg.Body = MailBody;          

            msg.IsBodyHtml = true;

            smtp.EnableSsl = true;

            smtp.Send(msg);

        }

Alert Messages for Ajaxed pages

We can use the following code for alert messages in ajaxed pages:

ScriptManager.RegisterStartupScript(this, this.GetType(), "msg", "alert(' Message....? ');", true);

Dynamic Calendar Extender in Ajax Control Toolkit

Here we are going to create a textbox and Ajax Calendar Extender dynamically.

TextBox textbox = new TextBox();

textbox.ID = this.ID + "Textbox";

textbox.Text = this.EditableField.TextValue;

textbox.TextChanged += new EventHandler(HandleTextboxTextChanged);

textbox.Width = new Unit(100, UnitType.Pixel);

CalendarExtender calExender = new CalendarExtender();

calExender.PopupButtonID = "Image1";

calExender.TargetControlID = textbox.ID;

this.Controls.Add(textbox);

this.Controls.Add(calExender);

The form should contain toolkit script manager.

Preventing the use of backbutton in asp.net

We can use the javascript code below  to prevent the use of backbutton in asp.net webpages.

<script type="text/javascript">

function noBack(){window.history.forward();}

noBack();

window.onload=noBack;

window.onpageshow=function(evt){if(evt.persisted)noBack();}

window.onunload=function(){void(0);}

</script>