private void AddEvaluationSaveBtn_Click(object sender, EventArgs e)
        {
            if (ValidateEntries())
            {
                if (flag == 0)
                {
                    SqlConnection conn = new SqlConnection(conURL);
                    conn.Open();
                    String     AddEvaluationCMD     = "INSERT INTO Evaluation (Name, TotalMarks, TotalWeightage) VALUES (@name, @marks, @weightage)";
                    SqlCommand AddEvaluationCommand = new SqlCommand(AddEvaluationCMD, conn);
                    AddEvaluationCommand.Parameters.Add(new SqlParameter("name", EvaluationNameTextBox.Text));
                    AddEvaluationCommand.Parameters.Add(new SqlParameter("marks", EvaluationMarksTextBox.Text));
                    AddEvaluationCommand.Parameters.Add(new SqlParameter("weightage", TotalWeightageTextBox.Text));
                    int        count = AddEvaluationCommand.ExecuteNonQuery();
                    Evaluation form  = new Evaluation();
                    form.Show();
                    this.Hide();
                }
                if (flag == 1)
                {
                    SqlConnection conn = new SqlConnection(conURL);
                    conn.Open();
                    String     UpdateEvaluationCMD     = "UPDATE Evaluation SET Name = @name, TotalMarks = @marks, TotalWeightage = @weightage WHERE Id = @id";
                    SqlCommand UpdateEvaluationCommand = new SqlCommand(UpdateEvaluationCMD, conn);
                    UpdateEvaluationCommand.Parameters.Add(new SqlParameter("name", EvaluationNameTextBox.Text));
                    UpdateEvaluationCommand.Parameters.Add(new SqlParameter("marks", EvaluationMarksTextBox.Text));
                    UpdateEvaluationCommand.Parameters.Add(new SqlParameter("weightage", TotalWeightageTextBox.Text));
                    UpdateEvaluationCommand.Parameters.Add(new SqlParameter("id", incomingId));

                    int count = UpdateEvaluationCommand.ExecuteNonQuery();

                    Evaluation form = new Evaluation();
                    form.Show();
                    this.Hide();
                }
            }
            else
            {
                MessageBox.Show("Invalid input");
            }
        }