Error : "you must set IsFrozen to false"

[Michele]

Hi,
I have (randomly) this kind of problem in my application:

when I load the Window containing the telerik Chart control ("WindowChart") the app crashes with this kind of error:
"Specified value of type 'System.Windows.Media.SolidColorBrush' must have IsFrozen set to false to modify."

It doesn't happen when "WindowChart" is the First window loaded.
If I load other windows before (all containing other telerik controls - not chart) - only in some cases, but always loading "WindowChart" - the App crashes

can you help me?

Michele Semprini

[Ves]

Hello Michele,

I am afraid we have not received such reports so far. Can you please provide more details about your setup -- if possible a small runnable project, which reproduces the issue. This way we will be able to debug it and get back to you with our findings. Thank you.

Best regards,
Ves
the Telerik team

[Michele]

Hi,
I'm sorry but i can't provide an examle because in happens randomly

but if you search on your Forums you can find another guy with the same problem
Are you sure you cannot figure out what kind of problem could be?

As you can imagine it.s a serious problem for our application

thanks, michele

[Ves]

Hi Michele,

It is still strange to me how I missed that other forum post. Unfortunately, the stack trace provided there could not really help  us to find the reason for this issue. I understand that it is hard to isolate an example for a problem which happens randomly, but I am afraid we cannot debug it when we are not able to reproduce it. You can start stripping various styling settings applied to the chart to see if removing any of them will fix the problem. You can focus on those related to SolidColorBrush objects. Do you use SeriesPalette as shown in the other forum post? Any additional detail you find might prove helpful to pinpoint the problem.

Best regards,
Ves
the Telerik team

[Michele]

Hi Ves,
I've some more informations:
The problem happens (in the InitializeComponents sub) also with the RadGridView and only in Windows that have the control (GridView or Chart) inside a tabControl but not in the first tab (I mean they are hidden when the window opens).

Can it help you?

thanks in advance
michele

[Ves]

Hello Michele,

I am afraid, I had now success in reproducing the problem. I put a RadTabControl with 3 RadTabItems -- one for a TextBlock, one for a RadChart and one for a RadGridView and loaded this window on a button click (as per your description -- it should not be the first window loaded). Still, everything works a expected. You can get this sample and start to apply any custom styles and/or themes you use to see which change will trigger the problem. Once reproduced, please send it back to us for investigation.

Best regards,
Ves
the Telerik team