CODEWITHSUNDEEP
c#.netwpfvisiblox
Pragmateek
Pragmateek

Reputation: 13364

Be notified of the loading of a new data-series in Visiblox

I have a Visiblox chart with a single data-series whose values are data-bound.

The issue is that the data source has thousands of items (key-value pairs), so update is quite sluggish.

So I wanted to display a spinner during loading:

But how can I be notified by Visiblox when it's going to update and just after it has finished to update?

I'd like to avoid any plumbing like:

(not even sure it would work)

Note that maybe this is impossible if the entire UI is frozen. :(

Upvotes: 0

Views: 74

Answers (1)

Sheridan
Sheridan

Reputation: 69959

I'm not sure if you have had any previous experience with 'spinners' as you call them, but in my opinion, you will not be able to achieve your requirements. Because WPF cannot display animating .gif files without custom animation code, this basically means that they cannot be displayed without UI thread interaction.

Now if you wanted to display a loading .gif while your application was performing some long running process in a background thread, that would be fine. However, even if you found an event to attach to, you want your spinner to be animated at the same time as the control is using the UI thread to draw the chart.

This would end with unexpected results at best and is more likely to just display a partially frozen spinner while extending the time that the control takes to draw the chart.

Upvotes: 1

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