How to reload/refresh taskbar icon on windows 10 during runtime without pin/ unpin.

Question

0.00/5 (No votes)

See more:

Hi,

I have an application(on Windows 10 Build Version 1703) which sets form(MDI Container type) Icon at runtime but the updated Icon didn't get displayed on Taskbar. It only get displayed once I pin and Unpin it. Any solution to this ? Could it be possible to load runtime Icon to taskbar without pin/unpin ? Can we refresh taskbar Icon programmatically so I can change in my application code.

Note: This only occur with installed application and not on Debug/release Dev environment.

What I have tried:

# Restarting Explorer.exe to refresh Taskbar Icon but it didn't work.
# Reconstruction Icon Cache (.db extension), it also didn't work

Posted 21-Jul-20 21:15pm

Member 14895791

Updated 22-Jul-20 5:28am

v4

Add a Solution

Comments

Richard MacCutchan 22-Jul-20 4:03am

For general applications the icon is loaded at program startup. How are you changing it, and what exactly are you changing?

Member 14895791 22-Jul-20 4:07am

In Code,

form.Icon = new Icon("status.ico");

where form is MDIContainer.

Richard MacCutchan 22-Jul-20 4:33am

I just tried that on a simple Windows Form application and it works fine.

Member 14895791 22-Jul-20 4:38am

It is specifically occur when you have installed application and not on development environment.

Richard MacCutchan 22-Jul-20 4:50am

I just ran the app stand-alone and it still works. BTW I am on Windows 10 v 1909, not sure if that makes any difference.

Member 14895791 22-Jul-20 4:57am

Thanks for version detail.

Member 14895791 22-Jul-20 5:04am

I am looking into an installed software(can see in control panel programs) not sure if Standalone app will also reproduce the same bug. Debug/Release definitely not reproduce it, it work fine in Dev environment.

Richard MacCutchan 22-Jul-20 4:51am

Are you sure the icon is in the correct place after installation?

Member 14895791 22-Jul-20 5:00am

Yes, I can see debugging(installed App) right value sets to form.Icon but didn't get displayed in Taskbar until I pin and unpin it for first time which means TaskBar Icon not getting refreshed or reloading without pin/unpin.

Richard MacCutchan 22-Jul-20 7:16am

I just built a Release version and that also works fine. However, my application is very simple so it may well be that something more complex would recreate the problem, or it is something to do with MDI types. If I get time I may try something further.

Member 14895791 22-Jul-20 11:27am

Sure! Thanks

Dave Kreskowiak 22-Jul-20 10:19am

Are you changing the icon during some "long running" process in your app, like showing "busy"?

Member 14895791 22-Jul-20 11:26am

No my software doesn't showing busy(processing) anywhere . My software consisting MDI container form and a child form to it.

chj124 15-Jun-22 7:43am

Changing the forms icon only works if you app starts visibly. An app started minimized gets the default icon and will not follow the forms icon.

1 solution

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 · Answer 1 · 2020-07-21T22:27:00

Just set the MDI form's Icon property.
I created two icons, added them to my resources via the Property page ... Resources tab, "Add Resource", "Add existing files".
Then just set the main form Icon property (not a child form, the App icon on the taskbar comes from the form instance displayed by Application.Run in Program.cs only) from the two resources.

Works for me!