private bool IsInputValid()
{
if (string.IsNullOrEmpty(this.FirstNameTextBox.Text))
{
InputHelper.DisplayError("First name cannot be empty.");
return(false);
}
if (string.IsNullOrEmpty(this.SurnameNameTextBox.Text))
{
InputHelper.DisplayError("Surname cannot be empty.");
return(false);
}
if (string.IsNullOrEmpty(this.GenderComboBox.SelectedValue.ToString()))
{
InputHelper.DisplayError("Gender cannot be empty.");
return(false);
}
if (this.BirthdayDatePicker.SelectedDate is null)
{
InputHelper.DisplayError("Birthday cannot be empty.");
return(false);
}
return(true);
}
private void App_DispatcherUnhandledExceptionHandler(object sender, System.Windows.Threading.DispatcherUnhandledExceptionEventArgs e)
{
InputHelper.DisplayError(e.Exception.Message);
e.Handled = true;
}