Dot Net Implementations

Fill the information and click on 'Generate Id' ..The otp will get sent to you in your mail. Generate_id Link button code- protected void LinkButton1_Click(object sender, EventArgs e)     {         string s = ConfigurationManager.AppSettings["db"];         cn = new SqlConnection(s);         cn.Open();         string q = "select max(roll)+1 from gen_id ";         cm = new SqlCommand(q, cn);         SmtpClient sm = new SmtpClient("student-cell.com", 25);         sm.Credentials = new System.Net.NetworkCredential("contact@student-cell.com", "Fg8@or61");         sm.DeliveryMethod = SmtpDeliveryMethod.Network;         MailMessage mm = new MailMessage("contact@student-cell.com", TextBox3.Text);         if(TextBox3.Text == "" )         {         ...

ASSIGNMENT- The objective is to write the name of directory in the first textbox and click on Create dir then all directories have to added in the below DropDownList. By Selecting the image from FileUpload control and the directory from dropdownlist we can put the image in the specific selected directory How to add the directories using code-     protected void CheckDir_Click(object sender, EventArgs e)     {         Directory.CreateDirectory(Server.MapPath(TextBox1.Text) + "/");          DropDownList1.Items.Add(TextBox1.Text);     }   UploadButton Code-      protected void Upload_Click(object sender, EventArgs e)     {         FileUpload1.SaveAs(Server.MapPath("~") + "//"+DropDownList1.Text+"//" + FileUpload1.FileName);     } Insert 4 directories- 1. pic1 2. pic 2  3. pic3  4. pic4  Selecting pic2 from the Drop Down List an...