private void SaveAdd_Click(object sender, RoutedEventArgs e)
        {
            string name                = textBoxName.Text;
            string description         = textBoxDescription.Text;
            string selectedFormulaName = comboBoxFormula.SelectedItem.ToString();

            if (string.IsNullOrWhiteSpace(name))
            {
                errormessage.Text = "Name can`t be null or empty";
                textBoxName.Focus();
            }
            else if (string.IsNullOrWhiteSpace(selectedFormulaName))
            {
                errormessage.Text = "You must select formula, that will be a base for your project!";
                comboBoxFormula.Focus();
            }
            else
            {
                Project newProject = new Project()
                {
                    Id                 = Guid.NewGuid(),
                    Name               = name,
                    Description        = description,
                    Formula            = _rFormulaService.GetFormulaIdByName(selectedFormulaName),
                    DevelopedByCompany = _rUsersService.GetCurrentUser().CompanyId
                };

                if (_rProjectService.AddPorject(newProject, out string error))
                {
                    Reset();
                    errormessage.Text = "Succesfully added!";
                }
                else
                {
                    errormessage.Text = error;
                }
            }
        }