Last Updated: 20 Feb 2018 13:17 by ADMIN
Ivan Todorov
Created on: 27 Dec 2010 05:01
Type: Bug Report
FIX. RadPanel - controls in RadPanel redraw slowly when changing the Enabled state of the panel.
Controls in RadPanel redraw slowly when changing the Enabled state of the panel.


private void radButton1_Click(object sender, EventArgs e)
    if (this.radPanel1.Enabled)
        this.radPanel1.Enabled = false;
        this.radPanel1.Visible = false;
        this.radPanel1.Enabled = true;
        this.radPanel1.Visible = true;
Dess | Tech Support Engineer, Sr.
Posted on: 20 Feb 2018 13:17
Hello Thomas,
A workaround has been added to this item. Feel free to test if it fits your case. If you are still experiencing any further difficulties, feel free to submit a support ticket providing additional information about the precise case. Thus, our support staff will gladly assist you.
Posted on: 20 Dec 2017 13:06
Any news on this?
This slows down many of our forms considerably and looks really horrible.
This should be a high priority bug, since there is no workaround and it is also a very common usecase.
RadPageView also has the exact same problem (i guess it uses panels?)
Posted on: 17 Aug 2017 10:08
Hello Stefan, thank you for your answer.
Unfortionatilly the workaround you provided does not help in my case.
When the control gets visible again the child controls still redraw slowly.

Please think about scheduling this for the next release, this needs to be properly fixed.
Posted on: 15 Aug 2017 11:40
Thank you for your input Robert.
I have added a workaround to the issue, please give it a try in the interim.
Posted on: 19 Jul 2017 20:58
6 years old and still not fixed, please consider fixing this
This makes the RadPanel nearly unusable in these conditions because it looks really unprofessional