Hello!
I was having a problem, in a client desktop wich I can't replicate on any other desktop my company owns, that I really can't fix ...
I'll paste the text bellow that comes with the alert ( some parts translated to english since I'm from Portugal:
Check the end of this message to obtain details on how to invoc the depuration
JIT (just-in-time)instead of this dialog box.
************** EXCEPTION TEXT **************
System.InvalidOperationException: COllection was modified; the operation of the enumeration may not be executed.
em System.Collections.ArrayList.ArrayListEnumeratorSimple.MoveNext()
em Telerik.WinControls.ComponentInputBehavior.ElementUnderMouseMonitorTimer_Tick(Object sender, EventArgs e)
em System.Windows.Forms.Timer.OnTick(EventArgs e)
em System.Windows.Forms.Timer.TimerNativeWindow.WndProc(Message& m)
em System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
************** Assemblies **************
mscorlib
Versão da assemblagem: 4.0.0.0
Versão Win32: 4.8.4180.0 built by: NET48REL1LAST_B
CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/mscorlib.dll
----------------------------------------
Progress.clrbridge
Versão da assemblagem: 12.1.0.1135
Versão Win32: 12.1.0.1135
CodeBase: file:///C:/OE12/bin/Progress.clrbridge.DLL
----------------------------------------
Progress.NetUI
Versão da assemblagem: 12.1.0.1135
Versão Win32: 12.1.0.1135
CodeBase: file:///C:/OE12/bin/Progress.NetUI.DLL
----------------------------------------
System
Versão da assemblagem: 4.0.0.0
Versão Win32: 4.8.4110.0 built by: NET48REL1LAST_B
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
System.Configuration
Versão da assemblagem: 4.0.0.0
Versão Win32: 4.8.4190.0 built by: NET48REL1LAST_B
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Configuration/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
System.Core
Versão da assemblagem: 4.0.0.0
Versão Win32: 4.8.4180.0 built by: NET48REL1LAST_B
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Core/v4.0_4.0.0.0__b77a5c561934e089/System.Core.dll
----------------------------------------
System.Xml
Versão da assemblagem: 4.0.0.0
Versão Win32: 4.8.3761.0 built by: NET48REL1
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
Progress.Telerik
Versão da assemblagem: 12.1.0.1099
Versão Win32: 12.1.0.1099
CodeBase: file:///C:/OE12/bin/Progress.Telerik.DLL
----------------------------------------
System.Windows.Forms
Versão da assemblagem: 4.0.0.0
Versão Win32: 4.8.4150.0 built by: NET48REL1LAST_C
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System.Drawing
Versão da assemblagem: 4.0.0.0
Versão Win32: 4.8.3761.0 built by: NET48REL1
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
OEEventHandlerAssembly
Versão da assemblagem: 0.0.0.0
Versão Win32: 12.1.0.1135
CodeBase: file:///C:/OE12/bin/Progress.NetUI.dll
----------------------------------------
ISymWrapper
Versão da assemblagem: 4.0.0.0
Versão Win32: 4.8.3761.0 built by: NET48REL1
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_32/ISymWrapper/v4.0_4.0.0.0__b03f5f7f11d50a3a/ISymWrapper.dll
----------------------------------------
Telerik.WinControls.UI
Versão da assemblagem: 2019.2.618.20
Versão Win32: 2019.2.618.20
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Telerik.WinControls.UI/2019.2.618.20__5bb2a467cbec794e/Telerik.WinControls.UI.dll
----------------------------------------
Telerik.WinControls
Versão da assemblagem: 2019.2.618.20
Versão Win32: 2019.2.618.20
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Telerik.WinControls/2019.2.618.20__5bb2a467cbec794e/Telerik.WinControls.dll
----------------------------------------
TelerikCommon
Versão da assemblagem: 2019.2.618.20
Versão Win32: 2019.2.618.20
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/TelerikCommon/2019.2.618.20__5bb2a467cbec794e/TelerikCommon.dll
----------------------------------------
Telerik.WinControls.GridView
Versão da assemblagem: 2019.2.618.20
Versão Win32: 2019.2.618.20
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Telerik.WinControls.GridView/2019.2.618.20__5bb2a467cbec794e/Telerik.WinControls.GridView.dll
----------------------------------------
Telerik.WinControls.Themes.Aqua
Versão da assemblagem: 2019.2.618.20
Versão Win32: 2019.2.618.20
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Telerik.WinControls.Themes.Aqua/2019.2.618.20__5bb2a467cbec794e/Telerik.WinControls.Themes.Aqua.dll
----------------------------------------
Telerik.WinControls.Themes.CrystalDark
Versão da assemblagem: 2019.2.618.20
Versão Win32: 2019.2.618.20
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Telerik.WinControls.Themes.CrystalDark/2019.2.618.20__5bb2a467cbec794e/Telerik.WinControls.Themes.CrystalDark.dll
----------------------------------------
Telerik.WinControls.Themes.VisualStudio2012Light
Versão da assemblagem: 2019.2.618.20
Versão Win32: 2019.2.618.20
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Telerik.WinControls.Themes.VisualStudio2012Light/2019.2.618.20__5bb2a467cbec794e/Telerik.WinControls.Themes.VisualStudio2012Light.dll
----------------------------------------
Telerik.WinControls.Themes.VisualStudio2012Dark
Versão da assemblagem: 2019.2.618.20
Versão Win32: 2019.2.618.20
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Telerik.WinControls.Themes.VisualStudio2012Dark/2019.2.618.20__5bb2a467cbec794e/Telerik.WinControls.Themes.VisualStudio2012Dark.dll
----------------------------------------
Telerik.WinControls.Themes.TelerikMetroBlue
Versão da assemblagem: 2019.2.618.20
Versão Win32: 2019.2.618.20
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Telerik.WinControls.Themes.TelerikMetroBlue/2019.2.618.20__5bb2a467cbec794e/Telerik.WinControls.Themes.TelerikMetroBlue.dll
----------------------------------------
Progress.Messages
Versão da assemblagem: 12.1.0.1135
Versão Win32: 12.1.0.1135
CodeBase: file:///C:/OE12/bin/dotnetmsgs/Progress.Messages.DLL
----------------------------------------
INFOSEncrypt.Net.Lib
Versão da assemblagem: 1.0.0.0
Versão Win32: 1.0.0.0
CodeBase: file:///C:/OE12/bin/dotnetmsgs/INFOSEncrypt.Net.Lib.DLL
----------------------------------------
System.DirectoryServices
Versão da assemblagem: 4.0.0.0
Versão Win32: 4.8.3761.0 built by: NET48REL1
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.DirectoryServices/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.DirectoryServices.dll
----------------------------------------
System.DirectoryServices.AccountManagement
Versão da assemblagem: 4.0.0.0
Versão Win32: 4.8.3761.0 built by: NET48REL1
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.DirectoryServices.AccountManagement/v4.0_4.0.0.0__b77a5c561934e089/System.DirectoryServices.AccountManagement.dll
----------------------------------------
OEProxyAssembly
Versão da assemblagem: 12.1.0.0
Versão Win32: 12.1.0.1135
CodeBase: file:///C:/OE12/bin/Progress.NetUI.dll
----------------------------------------
mscorlib.resources
Versão da assemblagem: 4.0.0.0
Versão Win32: 4.8.3761.0 built by: NET48REL1
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/mscorlib.resources/v4.0_4.0.0.0_pt_b77a5c561934e089/mscorlib.resources.dll
----------------------------------------
Accessibility
Versão da assemblagem: 4.0.0.0
Versão Win32: 4.8.3761.0 built by: NET48REL1
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/Accessibility/v4.0_4.0.0.0__b03f5f7f11d50a3a/Accessibility.dll
----------------------------------------
Microsoft.GeneratedCode
Versão da assemblagem: 1.0.0.0
Versão Win32: 4.8.3761.0 built by: NET48REL1
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
System.Data
Versão da assemblagem: 4.0.0.0
Versão Win32: 4.8.4190.0 built by: NET48REL1LAST_B
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_32/System.Data/v4.0_4.0.0.0__b77a5c561934e089/System.Data.dll
----------------------------------------
System.Numerics
Versão da assemblagem: 4.0.0.0
Versão Win32: 4.8.3761.0 built by: NET48REL1
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Numerics/v4.0_4.0.0.0__b77a5c561934e089/System.Numerics.dll
----------------------------------------
System.Windows.Forms.resources
Versão da assemblagem: 4.0.0.0
Versão Win32: 4.8.3761.0 built by: NET48REL1
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms.resources/v4.0_4.0.0.0_pt_b77a5c561934e089/System.Windows.Forms.resources.dll
----------------------------------------
************** Depuração JIT **************
TO active depuration just-in-time (JIT), the file .config
for this app or computer(machine.config) needs to have the value jitDebugging definido na secção system.windows.forms.
THe application also needs to be compiled with the depuration activated.
FOR EXAMPLE:
<configuration>
<system.windows.forms jitDebugging="true" />
</configuration>
When it's activated, any non processed exception will be sent for the JIT instead using the dialog box.
--------------------------------------------------
IMAGE TEXT TRANSLATED:
A not processed exception occurred. If you click "continuar" the app with ignore this error and will proceed. If you choose the other option the app will be closed instantly.
The collection was modified; the enumeration operation may not be executed.
------------------------------------------------
The client is using the 2019 version.
I'll wait for your response.
Have a nice day,
João Pinto.
2 Answers, 1 is accepted
Hello, João,
The provided stack trace is greatly appreciated. However, it is not enough for me to replicate the issue locally. What is the Telerik control that you are experiencing problems with? The screenshot is also not in English so it wouldn't be easy to determine what is the exact error that you are facing and most important what causes it.According to the translated message, it seems that the collection was modified and the enumeration operation may not be executed. Are you modifying a collection while it is being iterated in a foreach loop for example? I suppose that it is the reason for getting the exception.
However, without replicating the issue locally, we can make only conjectures what actually causes the undesired behavior on your end. That is why I would kindly ask you to provide a sample project demonstrating the error. Thus, we would be able to make an adequate analysis of the precise case and provide further assistance. Thank you in advance for your cooperation.
An alternative approach is to download the source code from your account and attach it to the problematic project. Thus, you can further debug it and identify the problematic place. The following KB article demonstrates how to attach the source code to your project: https://docs.telerik.com/devtools/winforms/knowledge-base/attach-telerik-source-code-to-your-project
I hope this information helps. If you need any further assistance please don't hesitate to contact me.
Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik
Rank 1
Iron
Iron
Iron
Hey there!
Sorry for answering late but I managed to find the error at the time.
I discovered 2 problems. The client didn't have the same Progress version I had and his computer wasn't really a recent one. Since i had the "Formatting" event active and was changing visual atributes inside it, it would trigger errors like that one.
I had this in 2 clients, in 1 I fixed by controlling the event better (leaving the event if it didn't match my conditions) and i removed the event by 100% on the client that had a old and slow computer.
JP
I am glad that the problem you were facing is now resolved. Please have in mind that it was really difficult to determine what caused this undesired behavior on your end since I was not familiar with the exact code implementation that you had. However, the stack trace indicated that a collection is being updated while it is being iterated which is not correct.
In case you are experiencing any further difficulties, it would be greatly appreciated if you can provide a sample runnable C#/VB project demonstrating the problem you are facing. Thus, we would be able to make an adequate analysis of the precise case and provide further assistance. Thank you.
Should you have further questions please let me know.