'BindingSource.ResetBindings not working unless "true" passed

I have a grid bound to a BindingSource (which is in turn bound to a List<T>). When I change the underlying List<T> data and then call:

bs.ResetBindings(false);

the grid does not get updated. But if I call:

bs.ResetBindings(true);

it does get updated. My code is now working but I'm still puzzled why this is necessary. According to MSDN the parameter to ResetBindings should be set to:

true if the data schema has changed; false if only values have changed

I certainly did not change any data schema... so why do I need true ?

c++sharpdata-binding.net-4.0


Solution 1:[1]

If you have two types: Cat and Dog that both derive from Animal. This will not work properly:

from Designer.cs

animalBindingSource1.DataSource = typeof(Animal);

and then in in e.g Form_Load

List<Cat> cats = getCats();
animalBindingSource1.DataSource = cats;

Try using a BindingList, e.g.

animalBindingSource1.DataSource = new BindingList<Animal>(cats);

Post your code if it doesn't work. There's probably nothing wrong with the devexpress gridcontrol.

Solution 2:[2]

Just do it like this:

bs.DataSource = ListOfMyObjectOrWhatEver; //EVEN IF ALREADY MADE!
bs.ResetBindings(false);
grid.Refresh();

Hope it helps...

Sources

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Source: Stack Overflow

Solution Source
Solution 1 Martin
Solution 2 Ricardo Rodrigues

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