Finishing an Online E-Mail System in ASP.NET 2.0 - Deleting Your Email

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It's comparatively easy to delete email, which is accomplished in the DeleteBtn_Click event on the ViewMail.aspx page.

 

protected void DeleteBtn_Click(object sender,EventArgs e){

  ///create a new instance of class Mail

    IMail mail = new Mail();

    try {

      foreach(GridViewRow row in MailView.Rows)

    { ///find your control

      CheckBox checkMail = (CheckBox)row.FindControl("CheckMail");

      if(checkMail != null)

      {

        if(checkMail.Checked == true)

        {

      ///execute the requested operation on the database

    mail.DeleteMail(Int32.Parse(MailView.DataKeys[row.RowIndex].Value.ToString()));

        }

      }

    }

  ///rebind the data to the control

    BindMailData(nFolderID);

  }

  catch(Exception ex)

  { ///jump to the page responsible for dealing exception

    Response.Redirect("ErrorPage.aspx?ErrorMsg=" + ex.Message.Replace("<br>","").Replace("n","")

      + "&ErrorUrl=" + Request.Url.ToString().Replace("<br>","").Replace("n",""));

  }

}

 

As is seen from above, we first find the ID value matching each e-mail to be deleted in the mail list control named MailView, and then invoke the DeleteMail method of the Mail object, which is finished through a typical for loop sentence. Here, remember that after deleting the selected e-mail, you have to rebind the data to MailView (i.e. refresh).

Next: Moving Your Email >>
 

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