Show wait message in c# windows app

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I am doing a c# windows application. I have to do some lengthy work just like many tables data update one by one so i just want to show which database updation is going on. Here i gave a sample program to solve my problem.

C#

for (int i = 0; i < 10; i++)
            {
                richTextBox1.Text += "Now" + i + " is running \n";
                System.Threading.Thread.Sleep(1000);
            }

Posted 30-Jul-12 5:48am

Sunil Kumar Pandab

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lewax00 30-Jul-12 11:50am

And your question is what exactly?

[no name] 30-Jul-12 12:10pm

I am not sure what you are asking here either.

3 solutions

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Clifford Nelson · Answer 1 · 2012-07-30T07:11:00

I think what you want is to use the BackgroundWorker:

C#

var bw = new BackgroundWorker();
bw.DoWork += (sender1, eventArgs1) =>
                        {
                            var bw1 = (BackgroundWorker)sender1;
                            System.Threading.Thread.Sleep(1000);
                            bw1.ReportProgress(1);
                        };
bw.ProgressChanged += (sender2, eventArgs2) =>
            {
                            richTextBox1.Text += "Now" + i + " is running \n";
            };
bw.RunWorkerAsync()

I would use a Task with the Dispatcher in WPF, but the above will work with WinForms.

Forgot the start of the Background worker

obp42 · Answer 2 · 2012-07-30T06:32:00

I'm not really sure what you are asking, but I think you might want something like this:

C#

int currentIndex = 0;
String[] updates;      // the array containing all the updates you are doing
                       // as Strings since you didn't specify

doUpdates();           // call this when you want to get started

void doUpdates()
{
    // check that current index is in bounds first, then...

    using(BackgroundWorker bw = new BackgroundWorker)
    {
        richTextBox1.Text += "Now " + i + " is running\n";

        bw.DoWork += new DoWorkEventHandler(bw_DoWork);
        bw.RunWorkerCompleted += new RunWorkerCompletedEventHandler(bw_Completed);
        bw.RunWorkerAsync();
    }
}

void bw_DoWork(object sender, DoWorkEventArgs e)
{
    // do your updates on updates[currentIndex]
}

void queryWorker_Completed(object sender, RunWorkerCompletedEventArgs e)
{
    ++currentIndex;
    doUpdates();
}

This will do each update on a BackgroundWorker thread, then update to the next index and run through the rest of the updates.

Richard MacCutchan · Answer 3 · 2012-07-30T06:22:00

Solution 1

Use a progress bar[^], it's much better for the user experience.

Posted 30-Jul-12 6:22am

Richard MacCutchan

Show wait message in c# windows app

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