Solved

C# listbox show added items for 5 seconds and leave app

Posted on 2014-03-13
2
339 Views
Last Modified: 2014-03-13
Hello experts,

I have a simple application where i send some data to a webserver by post. And while i do it i'm adding items to a listbox, just to inform the steps that are being done.
And after all finished the form with the listbox should show the information for 5 seconds and exit application.

My problem is, all the steps are working great with no problems, but while the steps are being done and i'm adding items to the listbox, the listbox doesn't show nothing, just blank. And in the end after all steps are done, wait's the 5 seconds with the listbox continuously  blank  and finally closes...

The code is inside the Form.Shown event, something like this:
private void Form1_Shown(object sender, EventArgs e)
{
    try
    {
        string[] lines = System.IO.File.ReadAllLines(@"C:\tmp\printers.txt");

        foreach (string line in lines)
        {
            responsefromserverRACC = "";
            while (responsefromserverRACC == "")
            {
                listBoxReport.Items.Add("Initiating: " + line);
                // code code
                }
            }
        }


        webClient.Dispose();
        webClientRACC.Dispose();

        System.Threading.Thread.Sleep(10000);
        System.Windows.Forms.Application.Exit();
    }
    catch (Exception em)
    {
        Console.WriteLine("error:");
        MessageBox.Show(em.Message);
    }
}

Open in new window


Should i do this different? In another event?
Or i just can't do it? :)

Thx in advanced,
Michael
0
Comment
Question by:justaphase
2 Comments
 
LVL 52

Accepted Solution

by:
Carl Tawn earned 500 total points
ID: 39926716
The quick solution would be to simply call Refresh() on the listbox after adding each item:
...

listBoxReport.Items.Add("Initiating: " + line);
listBoxReport.Refresh();

...

Open in new window

0
 
LVL 1

Author Closing Comment

by:justaphase
ID: 39926772
Oh for god sake... that simple..
Thx, it worked
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Many of us here at EE write code. Many of us write exceptional code; just as many of us write exception-prone code. As we all should know, exceptions are a mechanism for handling errors which are typically out of our control. From database errors, t…
This article is for Object-Oriented Programming (OOP) beginners. An Interface contains declarations of events, indexers, methods and/or properties. Any class which implements the Interface should provide the concrete implementation for each Inter…
This demo shows you how to set up the containerized NetScaler CPX with NetScaler Management and Analytics System in a non-routable Mesos/Marathon environment for use with Micro-Services applications.
A company’s greatest vulnerability is their email. CEO fraud, ransomware and spear phishing attacks are the no1 threat to a company’s security. Cybercrime is responsible for the largest loss of money to companies today with losses projected to r…

919 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

20 Experts available now in Live!

Get 1:1 Help Now