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updating column periodically with current timespan = Now - Created

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GridView
This is a migrated thread and some comments may be shown as answers.
Damian Slee
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Damian Slee asked on 30 Mar 2010, 04:21 PM
I have a RadGridView that is displaying a collection of records.  I am binding the collection to the grids ItemSource.  The collection and properties implements INotifyPropertyChanged and ICollectionChanged, and displays the values correctly.

One of the record properties is the time it was created.  I can display this ok, but I would rather display Now - Created timespan in minutes.  And then update it once a minute, to indicate how long the record has been "active" for.

I can use a value converter to calculate the timespan and return the number of minutes, but I am not sure how to trigger it to refresh the value in the cell (or increment it by 1 minute), every minute?

Only idea i have at the moment is creating a DispatcherTimer, and iterating through all the rows, updating each cell.   Is there anyway through binding I can trigger this to happen, or some interactivity behaviour to update it self?

thanks.

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Damian Slee
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answered on 30 Mar 2010, 04:55 PM
a Rebind() on the grid from a dispatcher timer seems to refresh it with the new elapsed time.   But i am concerned on how the performance will be with lots of records.
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Vlad
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answered on 31 Mar 2010, 07:31 AM
Hello,

Generally Rebind() will work exactly like INotifyCollectionChanged - will refresh the grid records.

Kind regards,
Vlad
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Damian Slee
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Vlad
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