How Do I Remove Delay On Panel Hiding

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.NET4.5

Hello,

i have an application that for use it, it's needed the login.
The login page is into a panel, and if the login is correct, the panel is going to hide.
On hiding, there is a delay on creating the controls under the panel.
How i can fix it?

Thanks

Posted 8-Nov-14 4:15am

Gianmarco V.

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Manas Bhardwaj 8-Nov-14 10:18am

Not clear. Please provide more details!

Gianmarco V. 8-Nov-14 10:24am

Small Gif.

https://cloud-de1.forhost.org/public/images/qa.gif

DamithSL 8-Nov-14 10:23am

how you hide? please include related code in the question

Gianmarco V. 8-Nov-14 10:25am

Just via panel.hide();

BillWoodruff 8-Nov-14 10:23am

The Login "page" is a separate Form that you present with 'ShowDialog ?

Gianmarco V. 8-Nov-14 10:25am

No, it's all into the same form

BillWoodruff 8-Nov-14 10:48am

Okay, got it, a Panel is shown for the log-in process. Are the other Controls that you will show when the log-in is successful, created and visible at the time the log-in Panel is preseted ? Remember that we can't see your screen, or know what you've done at design-time, so we may need to ask questions that seem obvious to you.

Gianmarco V. 8-Nov-14 10:50am

Thanks for your answer.
All the controls under the panel are created before the panel will hide.
If you need some code, just ask.

Thanks

DamithSL 8-Nov-14 11:03am

may be your login process taking more time, you can log the times for each task or use VS profiler to find where is the issue.

BillWoodruff 8-Nov-14 11:15am

The length of time a Panel is visible should not influence the rendering of Controls "underneath" it when it is made 'hidden.

BillWoodruff 8-Nov-14 11:14am

One last question: at what point in your application starting up do you make the log-in Panel visible: in the Main Form Load EventHandler, or ???

Gianmarco V. 8-Nov-14 11:15am

Main Load form

BillWoodruff 8-Nov-14 11:16am

I am going to post an answer, and, if it doesn't work for you, let me know, and I'll remove it.

Gianmarco V. 8-Nov-14 11:16am

Ok Thanks

Gianmarco V. 8-Nov-14 11:36am

Thanks, it's working nice!

Gianmarco V. 8-Nov-14 11:15am

If you can we can chat with skype?

Gianmarco V. 8-Nov-14 10:26am

This is a small gif, you can see the delay after login.

https://cloud-de1.forhost.org/public/images/qa.gif

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BillWoodruff · Accepted Answer · 2014-11-08T05:30:00

Assuming:

1. this is a WinForms application

2. at design-time all Controls in the Main Form have their visible property set to 'true.

Try this:

0. do not hide the log-in Panel and make it visible at run-time in the Form Load EventHandler: at design-time position the visible Panel used for log-in first in the z-order (so it's on top of all other Controls), and blocks the view of (hides) all other Controls.

1. set the 'DoubleBuffered Property of the Main Form to 'true in the Form at design-time using the Property Editor.

If that doesn't change the delay in rendering the Controls when you hide the Panel when log-in is complete then:

1. if you are doing anything involving Update/Refresh/Invalidate of the Form, or of Controls on the Form underneath the log-in Panel, add details of that to your question.

2. if you have modified the Program.cs file in any way, describe that in your question.

3. if you have made any direct use of this.SetStyle or Control.SetStyle, describe that.