Question

Why do we use bindingSource.ResetCurrentItem()?

Asked by: fylix0000

Hello experts,

I wants to find out what does ResetCurrentItem() really do and why do we need it since I see it in the existing code of the project I work on.  From looking at the document at MSDN I see that ResetCurrentItem() does the following:

"Causes a control bound to the BindingSource to reread the currently selected item and refresh its displayed value."

"Calling this method will cause the ListChanged event to occur, specifying the item changed at the current position."

My question is if I create a form to read email that has previous and next button to read the email bodies, I basically read the value of the form and apply styles such as colors, link to the text itself.

 In this case do I even need to call bindingSource.ResetCurrentItem() every time the form load?  Since I don't have any ListChanged event and plus if I call this would that overwrite any style changes I did to the data itself?  Can I go about with my business without having to call bindingSource.ResetCurrentItem() at the end?

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Asked On
2009-10-30 at 07:43:30ID24858180
Topic

C# Programming Language

Participating Experts
1
Points
500
Comments
2

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Answers

 

by: TheLearnedOnePosted on 2009-11-02 at 04:55:06ID: 25718885

ResetCurrentItem has a specific use, and I don't believe that you need to use it all the time.  I have used it in the past, when working with a highly dynamic database project, and it involved detecting when the underlying database changed, and then refreshing the data.

 

by: fylix0000Posted on 2009-11-03 at 08:47:30ID: 25730861

Thanks for your reply.  I played around with this past couple of days and I agree with your assessment as well.  For anyone that are interested in knowing about this; the best practice would be as follow:

This function call ensures the integrity of your data in the event of validation or data refresh.  So if your data need  some kind of massage to it prior display or use in other operations afterward then I recommend to always call ResetCurrentItem () prior your data massaging.

If you call this after then all of your previous attempt will be wiped out :)

20120131-EE-VQP-002

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