private void progressAddBtn_Click(object sender, EventArgs e)
        {
            double weight = 0;

            try
            {
                weight = Double.Parse(progressCurrentWeightTextBox.Text, CultureInfo.InvariantCulture);
            }
            catch (Exception)
            {
                MessageBox.Show("Vrijednost '" + progressCurrentWeightTextBox.Text + "' koju ste unijeli za tjelesnu masu nije odgovarajuća. Molimo Vas pokušajte ponovno.");
                return;
            }

            Progress progress = new Progress()
            {
                Weight          = weight,
                Date            = DateTime.Now,
                User            = user,
                IsUsersProgress = true
            };

            _progressController.AddProgress(progress);
            progressDatabase.Add(progress);
            AddRowToProgressTable(progress);
            RefreshChart();
            progressCurrentWeightTextBox.Text = "";
        }