protected void AssignTest(object sender, EventArgs e)
        {
            Page.ClientScript.RegisterStartupScript(GetType(), "id", "toggle_forms('UpcomingTest')", true);
            if (Page.IsValid)
            {
                DBHandler.DBHandler db = new DBHandler.DBHandler(con);
                Entities.Notes      n1 = new Entities.Notes()
                {
                    teacher     = Session["School"].ToString(),
                    date        = DateTime.Now.ToShortDateString(),
                    description = TextArea2.Value,
                    noteType    = "Quiz",
                };
                Entities.Section s1 = new Entities.Section()
                {
                    sectionName = DropDownList5.SelectedValue,
                };
                Entities.Class c1 = new Entities.Class()
                {
                    className = DropDownList4.SelectedValue,
                };
                Entities.Subjects s2 = new Entities.Subjects()
                {
                    subjectName = DropDownList6.SelectedValue,
                };

                db.AddNotes(n1, s2, s1, c1);
                TextArea2.Value = " ";
            }
        }
        protected void AssignHomeWork(object sender, EventArgs e)
        {
            Page.ClientScript.RegisterStartupScript(GetType(), "id", "toggle_forms('AssignHomeWork')", true);
            if (Page.IsValid)
            {
                Stream              str  = FileUpload1.PostedFile.InputStream;
                BinaryReader        br   = new BinaryReader(str);
                Byte[]              size = br.ReadBytes((int)str.Length);
                DBHandler.DBHandler db   = new DBHandler.DBHandler(con);
                Entities.Notes      n1   = new Entities.Notes()
                {
                    teacher     = Session["School"].ToString(),
                    date        = DateTime.Now.ToShortDateString(),
                    fileName    = Path.GetFileName(FileUpload1.PostedFile.FileName),
                    dataFile    = size,
                    description = TextArea1.Value,
                    noteType    = "Assignment",
                };
                Entities.Section s1 = new Entities.Section()
                {
                    sectionName = DropDownList2.SelectedValue,
                };
                Entities.Class c1 = new Entities.Class()
                {
                    className = DropDownList1.SelectedValue,
                };
                Entities.Subjects s2 = new Entities.Subjects()
                {
                    subjectName = DropDownList3.SelectedValue,
                };

                db.AddNotes(n1, s2, s1, c1);
                TextArea1.Value = " ";
            }
        }