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c#delegatesprogress-barbackgroundworkermultithreading
Jason94
Jason94

Reputation: 13610

Update progressbar's value from another thread?

My form creates a backgroundworker that every 6 secs checks something. Result is 1-100 and I want to display this.

But if i do it straight forward i get som cross-thread errors so I after some research delegates is the way to do it.

ive created inside the Form1 class:

public delegate void SetProgressbarValueDelegate(int val);

but how do i "connect it" to actually update the progressbar?

Thanks

Upvotes: 0

Views: 1097

Answers (1)

ColinE
ColinE

Reputation: 70142

Assuming your are using WinForms, The BackgroundWorker class raises a ProgressChanged event which will automatically be marshalled back onto your UI thread. You should make updates to your User Interface within your handler for this event.

There are some simple examples of how to use BackgroundWorker within the MSDN documentation.

Upvotes: 4

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