SYSK 127: ResetBindings To the Rescue!
.NET 2.0 came with a lot of cool (new and improved) controls, one of them is the System.Windows.Forms.BindingNavigator and the BindingSource class. The only problem I found so far with this control is that if in the Load event you bind it to a BindingSource with zero elements, and then try to add an object by clicking “Add New” icon, the controls on the form will not be refreshed with new data.
The solution I use is to call BindingSource.ResetBinding when the count = 1 (i.e. when it’s the first time we add an object after binding it to an empty list).
To see it for yourself, comment out
_bs.ResetBindings(false);
line in
private void bindingNavigatorAddNewItem_Click(object sender, EventArgs e)
method and run the project (code attached). Then click yellow plus icon to add new object.
Now uncomment the ResentBinding call and run again – the app behaves as expected.