Status strip progress bar

Question

I'm doing network scanning application. The application works fine, just I want to add ProgressBar which show the progress start from when user click scanning until scan completed.

private void scanClick(object sender, System.EventArgs e)
{
    if (StatusLabel.Text == "Ready")
    {
        StatusLabel.Text = "Please wait while processing is done...";
    }  
    //scanning operation begins
    //label changed when scan completed
    StatusLabel.Text = "scan completed";                           
}

Now I have a progress bar something like this:
enter image description here

How to synchronize the progress bar with the scan job. Please advise.

What API you use to scan? Does that notifies you about the progress? — Sriram Sakthivel, Apr 18 '14 at 10:10
You could use a BackgroundWorker, for updating your progressbar. — Max, Apr 18 '14 at 10:11
@MaxMommersteeg `BackGroundWorker` is useless if the core API you use doesn't provide progress information. — Sriram Sakthivel, Apr 18 '14 at 10:23
@MaxMommersteeg So how'll you do scanning without using an API? — Sriram Sakthivel, Apr 18 '14 at 10:27
@SriramSakthivel I don't have to create a networking scanning application. — Max, Apr 18 '14 at 10:29

score 1 · Answer 1 · answered Apr 18 '14 at 10:25

If you do not know the progress in between those two comments, then you can't sync your progress bar with the scanning operation
```
//scanning operation begins
//label changed when scan completed
```
One alternate is showing the progress bar moving left and right showing scanning is in progress and at the same time do not know when it will complete.
Use a Background thread to perform the Scanning operation, perform the progress update in the main thread

score 0 · Answer 2 · answered Apr 18 '14 at 10:24

0

If you are doing some time consuming operation in the same thread, then update progress and call Application.DoEvents();.

If you are doing asynchronous operation, then update ProgressBar with Control.Invoke method.

answered Apr 18 '14 at 10:24

Elvedin Hamzagic

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Status strip progress bar

2 Answers2