public void UpdateChosenLocation()
{
if (location == null)
{
if (DisplayMessageBoxes)
{
MessageBox.Show("Choose element to update", "Error message");
}
else
{
throw new NullReferenceException();
}
}
else if (Name == null || Name == "" || CostRate < 0 || Availability < 0)
{
if (DisplayMessageBoxes)
{
MessageBox.Show("You provided incorrect value", "Error message");
}
else
{
throw new FormatException();
}
}
else
{
runAsynchronously(() =>
{
model.UpdateLocation(location.LocationID, Name, CostRate, Availability, DateTime.Now);
GetAllLocations.Execute(null);
});
}
}
public void RemoveChosenLocation()
{
if (location == null)
{
if (DisplayMessageBoxes)
{
MessageBox.Show("Choose element to remove", "Error message");
}
else
{
throw new NullReferenceException();
}
}
else
{
runAsynchronously(() =>
{
model.DeleteLocation(location.LocationID);
GetAllLocations.Execute(null);
});
}
}
public void AddNewLocation()
{
if (Name == null || Name == "" || CostRate < 0 || Availability < 0)
{
if (DisplayMessageBoxes)
{
MessageBox.Show("You provided incorrect value", "Error message");
}
else
{
throw new FormatException();
}
}
else
{
runAsynchronously(() =>
{
model.AddLocation(0, Name, CostRate, Availability, DateTime.Now);
GetAllLocations.Execute(null);
});
}
}