private void ExcuteAssignVisaViewCommand()
        {
            if (!SaveEmployee())
            {
                return;
            }

            var visa = new Visas(new VisaModel
            {
                Employee = SelectedEmployee
            });

            visa.ShowDialog();

            bool?dialogueResult = visa.DialogResult;

            if (dialogueResult != null && !(bool)dialogueResult)
            {
                return;
            }
            Load();
            EmployeeId = SelectedEmployee.Id;
            //SaveEmployee();
        }