Question

I have and object on

bindingSource.DataSource = object

I have to implement Save and Revert Changes on a Windows Form
for Revert Changes i have all Items for Properties with DataSourceUpdateMode.Never
and bindingSource.ResetBindings(false);
-> works fine

but for Save I need to make a Commit
bindingSource.EndEdit(); – it doesn’t update my object

and i tried to make

TextEdit.DataBindings.DefaultDataSourceUpdateMode = DataSourceUpdateMode.OnValidation;
bindingSource.EndEdit();
TextEdit.DataBindings.DefaultDataSourceUpdateMode = DataSourceUpdateMode.Never;

but it didn’t work,
if i let DataSourceUpdateMode.OnValidation , the Save will work fine , but Revert changes will not work
and I don’t want to make a copy of the object
any ideas?

Answer 1

When you set the DataSourceUpdateMode enum to Never and use this method on several controls bound to the BindingSource, there are various problems:

it resets the values of other controls, or
it works for one control but not for the other. 

http://msdn.microsoft.com/en-us/library/system.windows.forms.binding.writevalue%28v=vs.90%29.aspx

http://weblogs.asp.net/psteele/archive/2006/10/10/Data-Binding-fails-me-again_2E002E002E00_.aspx