public void ChangeValidateCanExecute()
{
try
{
bool validatesDateRange = _validateDateRange() == null;
if (validatesDateRange)
{
_validateCommand.ChangeCanExecute();
}
}
catch (Exception ex)
{
Logger.Log(ex);
}
}
private void _client_selected(object sender, EventArgs e)
{
bool nothingSelected = _searchClientVMsView.CurrentPosition == -1;
bool somethingSelected = !nothingSelected;
bool canExecute = _selectClientCommand.CanExecute(null);
bool cannotExecute = !canExecute;
if (
(nothingSelected && canExecute) ||
(somethingSelected && cannotExecute)
)
{
_selectClientCommand.ChangeCanExecute();
}
}
private void _clientBookingsView_currentChanged(object sender, EventArgs e)
{
bool nothingSelected = _clientBookingsView.CurrentPosition == -1;
bool somethingSelected = !nothingSelected;
bool canExecute = _selectBookingCommand.CanExecute(null);
if (
(somethingSelected && !canExecute) ||
(nothingSelected && canExecute)
)
{
_selectBookingCommand.ChangeCanExecute();
_cancelBookingCommand.ChangeCanExecute();
}
}
private void _unlockSaveAndSumUpIfNeeded()
{
bool canSave = _saveClientCommand.CanExecute(null);
bool canSumUp = _sumUpCommand.CanExecute(null);
bool isValid = ((IDataErrorInfo)_clientEntity).Error == null;
if ((canSave && !isValid) ||
(!canSave && isValid)
)
{
_saveClientCommand.ChangeCanExecute();
}
if ((canSumUp && !isValid) ||
(!canSumUp && isValid)
)
{
_sumUpCommand.ChangeCanExecute();
}
}