protected void BtnAdd_Click(object sender, EventArgs e)
 {
     dt1 = obj.CheckAdminMobilenumber(txtno.Text);
     if (dt1.Rows.Count > 0)
     {
         str = "Welcome Admin Your UserName Is::" + dt1.Rows[0]["username"].ToString() + "Your Password Is::" + dt1.Rows[0]["pwd"].ToString();
         SendSMS(txtno.Text, str);
         txtno.Text = "";
     }
     if (dt1.Rows.Count <= 0)
     {
         dt2 = obj.CheckStafMobilenumber(txtno.Text);
         if (dt2.Rows.Count > 0)
         {
             str = "Welcome Staff Your Username Is::" + dt2.Rows[0]["username"].ToString() + "Your Password Is::" + dt2.Rows[0]["pwd"].ToString();
             SendSMS(txtno.Text, str);
             txtno.Text = "";
         }
         if (dt2.Rows.Count <= 0)
         {
             dt3 = obj.CheckeacherMobilenumber(txtno.Text);
             if (dt3.Rows.Count > 0)
             {
                 str = "Welcome Teacher Your Username Is::" + dt3.Rows[0]["username"].ToString() + "Your Password Is::" + dt3.Rows[0]["pwd"].ToString();
                 SendSMS(txtno.Text, str);
                 lblmsg.Text = "Details Has Been Sent";
                 txtno.Text  = "";
             }
             if (dt3.Rows.Count <= 0)
             {
                 lblmsg.Text = "Mobile No. Is Invalid";
                 txtno.Text  = "";
             }
         }
     }
 }