private void Exams_Assignment_Button_Click(object sender, EventArgs e)
{
Grade56 grade = new Grade56();
grade.Show();
}
public void Apply_Button_Click(object sender, EventArgs e)
{
try
{
this.connetionString = "Data Source = whitesnow.database.windows.net; Initial Catalog = Mazal; Integrated Security = False; User ID = Grimm; Password = #!7Dwarfs; Connect Timeout = 15; Encrypt = False; TrustServerCertificate = True; ApplicationIntent = ReadWrite; MultiSubnetFailover = False; MultipleActiveResultSets=true";
this.sqlcon = new SqlConnection(connetionString);
SqlCommand cmd = new SqlCommand("select * from Person where ID ='" + StudentID.Text + "' and Permission = 'Student'", sqlcon);
if (!checkString(StudentID.Text, "ID") || !checkString(CourseID.Text, "Course"))
{
this.Close();
MessageBox.Show("Try again, this is not a correct ID!");
Grade56 form2 = new Grade56();
form2.Show();
}
else
{
this.sqlcon.Open();
SqlDataReader dr = cmd.ExecuteReader();
if (dr.Read() == true)
{
dr.Close();
cmd = new SqlCommand("select * from Teaching_Stuff where ID ='" + Utility.User.ID + "' and Course_id='" + CourseID.Text + "'", sqlcon);
dr = cmd.ExecuteReader();
if (dr.Read() == true)
{
dr.Close();
cmd = new SqlCommand("select * from Student_Courses where stud_Id ='" + StudentID.Text + "' and course_id='" + CourseID.Text + "' and final_grade < 56", sqlcon);
dr = cmd.ExecuteReader();
if (dr.Read() == true)
{
dr.Close();
cmd = new SqlCommand("update Student_Courses set final_grade = 56 where course_id='" + CourseID.Text + "' and stud_Id = '" + StudentID.Text + "' and Type = 1", sqlcon);
SqlDataAdapter sda = new SqlDataAdapter();
sda.SelectCommand = cmd;
DataTable dbdataset = new DataTable();
sda.Fill(dbdataset);
BindingSource bsource = new BindingSource();
bsource.DataSource = dbdataset;
sda.Update(dbdataset);
MessageBox.Show("Changed grade succesfully!");
this.sqlcon.Close();
this.Close();
}
else
{
throw new ArgumentException("This student have a grade greater than 56!");
}
}
else
{
throw new ArgumentException("Try again, you do not teach such a course!");
}
}
else
{
throw new ArgumentException("Try again, there is not such student in our department!");
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
this.Close();
Grade56 form2 = new Grade56();
form2.Show();
}
this.sqlcon.Close();
this.Close();
}