The Given Key Was Not Present in the Dictionary

[jllewisville]

I've installed the latest release of AppRefiner. I've installed the latest release of .Net SDK. I open the AppRefiner application. I open App Designer, and open a Peoplecode object. That's when I get the "The Given Key Was Not Present in the Dictionary" error. Any help would be appreciated!

[tim-slater-gt]

A picture of the Editor Tweaks tab as well as a picture of that error message (and stack trace if present) would be helpful as this doesn't occur normally. So I do wonder what's going on, and a stack trace would help narrow down which dictionary is missing something. I suspect you have prompt for DB enabled.

If so make you you have set your TNS Admin location via the button on the Editor Tweaks. This allows App Refiner to find the defined TNS names and populate them on the DB connection dialog. With Prompt For DB connection enabled it will automatically try and find the TNS entry for the App Designer instance that is focused, and this is what I suspect is happening.

If it can't find your tnsnames.ora, that dictionary of TNS names is empty, then AppDesigner gets focus on a peoplecode editor which triggers the prompt for DB, which grabs database name and tries to find it for the connection dialog.

[jllewisville]

This is helpful, let me take a look and try a couple things. I'll report back. Thank you!

[jllewisville]

[2025-08-14 16:14:34.643] [INFO] Successfully set up WinEvent hook for focus events.
[2025-08-14 16:14:35.471] [INFO] Registered built-in tooltip provider: Highlight Tooltips
[2025-08-14 16:14:35.471] [INFO] Registered built-in tooltip provider: Application Class Details
[2025-08-14 16:14:35.471] [INFO] Registered built-in tooltip provider: Method Parameters
[2025-08-14 16:14:35.471] [INFO] Registered built-in tooltip provider: PeopleSoft Object Info
[2025-08-14 16:14:35.471] [INFO] Registered built-in tooltip provider: Scope Context
[2025-08-14 16:14:35.472] [INFO] Registered built-in tooltip provider: Variable Info
[2025-08-14 16:14:35.472] [INFO] Initialized TooltipManager with 6 providers
[2025-08-14 16:17:11.570] [INFO] All settings saved and persisted immediately.
[2025-08-14 16:17:11.573] [INFO] TNS_ADMIN property set to: C:\app\oracle\product\19.0.0\client_1\network\admin
[2025-08-14 16:17:21.301] [INFO] All settings saved and persisted immediately.
[2025-08-14 16:17:21.301] [INFO] TNS_ADMIN property set to: C:\app\oracle\product\19.0.0\client_1\network\admin
[2025-08-14 16:17:40.294] [INFO] All settings saved and persisted immediately.
[2025-08-14 16:17:40.294] [INFO] TNS_ADMIN property set to: C:\app\oracle\product\19.0.0\client_1\network\admin
[2025-08-14 16:17:47.099] [INFO] All settings saved and persisted immediately.
[2025-08-14 16:18:20.154] [INFO] WinEvent detected Scintilla window focus: 0xD0424
[2025-08-14 16:18:20.898] [INFO] Set editor DBName to: PC92DEV3
[2025-08-14 16:18:20.898] [INFO] Editor grandparent window title: UC_SF_TUITION_GUARANTEE.HANDLERS.TuitionGuaranteeTrafficCop.OnExecute (Application Package PeopleCode)
[2025-08-14 16:18:20.898] [INFO] Determining path from caption: UC_SF_TUITION_GUARANTEE.HANDLERS.TuitionGuaranteeTrafficCop.OnExecute (Application Package PeopleCode)
[2025-08-14 16:18:20.898] [INFO] Editor type: Application Package PeopleCode, Caption without type: UC_SF_TUITION_GUARANTEE.HANDLERS.TuitionGuaranteeTrafficCop.OnExecute
[2025-08-14 16:18:20.898] [INFO] PeopleCode path: pc92dev3/peoplecode/app_package/UC_SF_TUITION_GUARANTEE/HANDLERS/TuitionGuaranteeTrafficCop/OnExecute.pcode
[2025-08-14 16:18:20.899] [INFO] Set editor RelativePath to: pc92dev3/peoplecode/app_package/UC_SF_TUITION_GUARANTEE/HANDLERS/TuitionGuaranteeTrafficCop/OnExecute.pcode
[2025-08-14 16:18:20.902] [ERROR] Failed to initialize editor: Access is denied.
[2025-08-14 16:18:20.902] [INFO] Error getting Scintilla editor: Access is denied.
[2025-08-14 16:18:20.903] [INFO] WinEvent detected Scintilla window focus: 0xD0424
[2025-08-14 16:18:20.905] [INFO] Found new editor via WinEvent HWND: D0424, PID: 3188 Thread: 2D70
[2025-08-14 16:18:20.905] [INFO] Editor isn't subclassed: 853028
[2025-08-14 16:18:21.116] [INFO] Window subclassing result: False
[2025-08-14 16:18:21.310] [INFO] WinEvent detected Scintilla window focus: 0xD0424
[2025-08-14 16:18:21.310] [INFO] Found new editor via WinEvent HWND: D0424, PID: 3188 Thread: 2D70
[2025-08-14 16:18:21.310] [INFO] Editor isn't subclassed: 853028
[2025-08-14 16:18:21.310] [INFO] Window subclassing result: False
[2025-08-14 16:18:21.311] [INFO] WinEvent detected Scintilla window focus: 0xD0424
[2025-08-14 16:18:21.311] [INFO] Found new editor via WinEvent HWND: D0424, PID: 3188 Thread: 2D70
[2025-08-14 16:18:21.311] [INFO] Editor isn't subclassed: 853028
[2025-08-14 16:18:21.311] [INFO] Window subclassing result: False
[2025-08-14 16:18:37.440] [INFO] WinEvent detected Scintilla window focus: 0xD0424
[2025-08-14 16:18:37.440] [INFO] Found new editor via WinEvent HWND: D0424, PID: 3188 Thread: 2D70
[2025-08-14 16:18:37.440] [INFO] Editor isn't subclassed: 853028
[2025-08-14 16:18:37.440] [INFO] Window subclassing result: False
[2025-08-14 16:18:37.451] [INFO] WinEvent detected Scintilla window focus: 0xD0424
[2025-08-14 16:18:37.451] [INFO] Found new editor via WinEvent HWND: D0424, PID: 3188 Thread: 2D70
[2025-08-14 16:18:37.451] [INFO] Editor isn't subclassed: 853028
[2025-08-14 16:18:37.451] [INFO] Window subclassing result: False
[2025-08-14 16:18:43.351] [INFO] WinEvent detected Scintilla window focus: 0xD0424
[2025-08-14 16:18:43.351] [INFO] Found new editor via WinEvent HWND: D0424, PID: 3188 Thread: 2D70
[2025-08-14 16:18:43.351] [INFO] Editor isn't subclassed: 853028
[2025-08-14 16:18:43.351] [INFO] Window subclassing result: False
[2025-08-14 16:18:43.366] [INFO] WinEvent detected Scintilla window focus: 0xD0424
[2025-08-14 16:18:43.367] [INFO] Found new editor via WinEvent HWND: D0424, PID: 3188 Thread: 2D70
[2025-08-14 16:18:43.367] [INFO] Editor isn't subclassed: 853028
[2025-08-14 16:18:43.367] [INFO] Window subclassing result: False
[2025-08-14 16:20:58.098] [INFO] Displaying debug dialog...

[tim-slater-gt]

Can you send me that full exception text please so I can get line numbers. This seems to be code folding related and not DB related. Quite interesting.. haven't ever seen this before. Also what tools version?

[jllewisville]

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.Collections.Generic.KeyNotFoundException: The given key '12680' was not present in the dictionary.
at System.Collections.Generic.Dictionary2.get_Item(TKey key) at AppRefiner.ScintillaManager.EnableFolding(ScintillaEditor editor) in D:\a\AppRefiner\AppRefiner\AppRefiner\ScintillaManager.cs:line 602 at AppRefiner.MainForm.ProcessNewEditor(ScintillaEditor editor) in D:\a\AppRefiner\AppRefiner\AppRefiner\MainForm.cs:line 2023 at AppRefiner.MainForm.HandleWindowFocusEvent(Object sender, IntPtr hwnd) in D:\a\AppRefiner\AppRefiner\AppRefiner\MainForm.cs:line 2264 at InvokeStub_SendOrPostCallback.Invoke(Object, Span1)
at System.Reflection.MethodBaseInvoker.InvokeWithOneArg(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)

************** Loaded Assemblies **************
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Location: C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.19\System.Private.CoreLib.dll

AppRefiner
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Location: X:\Peoplesoft\Projects\AppRefiner.dll

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PeopleCodeParser
Assembly Version: 1.0.0.0
Location: X:\Peoplesoft\Projects\PeopleCodeParser.dll

Antlr4.Runtime.Standard
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Location: X:\Peoplesoft\Projects\Antlr4.Runtime.Standard.dll

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************** JIT Debugging **************

PT 8.60.14

[tim-slater-gt]

Thank you for this. those line numbers in combination with the AppRefiner debug log show whats going on here.

[2025-08-14 16:18:20.902] [ERROR] Failed to initialize editor: Access is denied.
[2025-08-14 16:18:20.902] [INFO] Error getting Scintilla editor: Access is denied.

The machine you are on, or the account etc has some sort of restriction disallowing AppRefiner from opening a handle to the Application Designer process. Unfortunately this is required for code folding since we need to determine if Lexilla library is loaded (if it is, code folding is "free", if not, then AppRefiner has to set the folding levels on each line), the ability to have a process handle and read/write to memory in App Designer is also needed for a variety of other things that AppRefiner enables (like refactorings) since we have to marshal across the new text to insert into the editor, as well as the ability to know when specific Scintilla Editor events happen for shortcuts and snapshots among other things.

Without sufficient access I am afraid that AppRefiner will not work for you and there isn't much I can do about it on the AppRefiner side, so many things would need to be disabled in AppRefiner in that limited scenario it would practically offer no benefit :(

[jllewisville]

FYI, I'm running App Designer on a virtual machine, so it's quite possible there would be some restrictions. I can ask the VDI administrator if there's anything he can do to resolve the restrictions.

Thanks!!

[tim-slater-gt]

If it helps, here soon we will have our releases with digital code signing, instead of being unsigned.

[tim-slater-gt]

the code that is triggering the access denied:

            if (processHandles.ContainsKey(processId))
            {
                editor.hProc = processHandles[processId];
            }
            else
            {
                editor.hProc = OpenProcess(PROCESS_VM_READ | PROCESS_VM_WRITE | PROCESS_VM_OPERATION, false, processId);
                processHandles.Add(processId, editor.hProc);
            }

            if (hasLexilla.ContainsKey(processId))
            {
                editor.HasLexilla = hasLexilla[processId];
            }
            else
            {
                // Check if any module in the process has the name "Lexilla.dll"
                Process process = Process.GetProcessById((int)processId);
                var lexillaLoaded = process.Modules
                    .Cast<ProcessModule>()
                    .Any(module => string.Equals(module.ModuleName, "Lexilla.dll", StringComparison.OrdinalIgnoreCase));
                hasLexilla[processId] = lexillaLoaded;
                editor.HasLexilla = lexillaLoaded;
            }