public void Hide_Eval_And_Insert_Marks_And_Update_Marks_Code()
{
Eval_1_Label.Hide();
Eval_1_txtbox.Hide();
Eval_2_Label.Hide();
Eval_2_txtbox.Hide();
Eval_3_Label.Hide();
Eval_3_txtbox.Hide();
Insert_eval_mode.Hide();
Enter_Eval_Modes_Label.Hide();
Enter_Student_Marks_Label.Hide();
Eval_1_Marks_Label.Hide();
Eval_1_Marks_txtbox.Hide();
Eval_2_Marks_Label.Hide();
Eval_2_Marks_txtbox.Hide();
Eval_3_Marks_Label.Hide();
Eval_3_Marks_txtbox.Hide();
Insert_Eval_Marks_Button.Hide();
Marks_Info_Label.Hide();
Total_Score_label.Hide();
Marks_Outof_50.Hide();
Update_Eval_Marks_Button.Hide();
}
// Method for displaying the marks of students already entered in the database.
public void Display_And_Update_Student_Marks(string stud_name)
{
Eval_1_Marks_Label.Show();
Eval_1_Marks_txtbox.Show();
Eval_2_Marks_Label.Show();
Eval_2_Marks_txtbox.Show();
Eval_3_Marks_Label.Show();
Eval_3_Marks_txtbox.Show();
Marks_Info_Label.Show();
Enter_Eval_Modes_Label.Hide();
Enter_Student_Marks_Label.Show();
Update_Eval_Marks_Button.Show();
Insert_Eval_Marks_Button.Hide();
Total_Score_label.Show();
Marks_Outof_50.Show();
Enter_Student_Marks_Label.Text = "Update marks of : " + stud_name;
Get_Evaluation_Modes_For_Labels();
string commandText1 = "SELECT eval_1_marks, eval_2_marks, eval_3_marks, final_marks from Evaluation_Marks where student_id = (SELECT student_id from Student where student_name = @stud_name) and subject_id = (SELECT subject_id from Subject where subject_name = @subj_name)";
try
{
using (SqlCommand cmd = new SqlCommand(commandText1, sqlConnection1))
{
cmd.Parameters.AddWithValue("@stud_name", stud_name);
cmd.Parameters.AddWithValue("@subj_name", SubjectComboBox.SelectedItem);
SqlDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
Eval_1_Marks_txtbox.Text = reader.GetInt32(0).ToString();
Eval_2_Marks_txtbox.Text = reader.GetInt32(1).ToString();
Eval_3_Marks_txtbox.Text = reader.GetInt32(2).ToString();
Marks_Outof_50.Text = reader.GetInt32(3).ToString() + " / 50";
}
reader.Close();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void StudentComboBox_SelectedValueChanged(object sender, EventArgs e)
{
Enter_Eval_Modes_Label.Show();
Total_Score_label.Hide();
Marks_Outof_50.Hide();
Insert_Eval_Marks_Button.Show();
Update_Eval_Marks_Button.Hide();
string commandText1 = "SELECT eval_mode_1,eval_mode_2,eval_mode_3 FROM Evaluation WHERE subject_id = (SELECT subject_id FROM Subject where subject_name = @s1_name)";
try
{
//sqlConnection1.Open();
using (SqlCommand cmd = new SqlCommand(commandText1, sqlConnection1))
{
cmd.Parameters.AddWithValue("@s1_name", SubjectComboBox.Text);
SqlDataReader reader = cmd.ExecuteReader();
// If the evaluation modes already are entered in the database.
if (reader.HasRows)
{
reader.Close();
if (Check_If_Marks_Already_Exist())
{
Display_And_Update_Student_Marks(StudentComboBox.SelectedItem.ToString());
}
else
{
// Displaying Textboxes and Labels for inserting Student marks and Labels
Display_Textboxes_And_Labels_For_Inserting_Marks();
}
}
// If the evaluation modes are not yet entered in the database.
// Creation of Evaluation modes.
else
{
reader.Close();
Enter_Modes_Of_Evaluation();
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
