My form1 is invisible when i start it. (background threading)

Question

0.00/5 (No votes)

See more:

My current Form1 is invisible when I start it.

When I start my application,
I want my Form1 being visible
then, label4 with the announcement being displayed
then, a StartPage() method that takes 5seconds to load.
and then, the label4 to dissapear.

I tried with Application.DoEvents(); and no effect.
Then I tried with Application.Run();but it is not doing what I want.

What should I use, please?

C#

private void Form1_Load(object sender, EventArgs e)
{
    Application.DoEvents();
  //  Application.Run(); //this just skip everything
    label4.Visible = true;
    StartPage();//is taking 5s to load
    label4.Visible = false;
}

Thanks.

Posted 10-Aug-15 22:04pm

_Q12_

Updated 14-Feb-16 0:20am

v2

Add a Solution

2 solutions

Solution 1

If possible, you should remove the time-consuming code from the Load event handler. You might put it in a BackgroundWorker[^].

Posted 10-Aug-15 22:33pm

CPallini

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Accepted Answer · 2015-08-10T22:39:00

First off, as Carlo has said, you should move time-consuming work into a background thread, to free up your UI thread. Never use Application.DoEvents - if you have to, it's a good sign that you are doing something in totally the wrong way.

And I'd start it from the Form.Shown event as well rather than the Load:

C#

private void Form1_Shown(object sender, EventArgs e)
    {
    BackgroundWorker work = new BackgroundWorker();
    work.DoWork += work_DoWork;
    work.RunWorkerCompleted += work_RunWorkerCompleted;
    label4.Visible = true;
    work.RunWorkerAsync();
    }

void work_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
    {
    label4.Visible = false;
    }

void work_DoWork(object sender, DoWorkEventArgs e)
    {
    StartPage();
    }