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Glenn Robbins
995
Unhandled Exception
posted

Here is the relevant code I am running on a separate thread which has thrown an Unhandled Exception.  The text of the Unhandled Exception is below the code.

txtProcess is an Infragistics text editor set at multi-line with scrollbars.

public delegate void UpdateTextCallBack(string msg);


private void UpdateRunStatus(string msg)
        {
            try
            {

                txtProcess.Text  += HelperFunctions.NewLine() + msg;
                txtProcess.SelectionStart = txtProcess.Text.Length;
                txtProcess.ScrollToCaret();
                
            }
            catch (Exception)
            {
                
               throw;
            }
      
        }

in my method running on a different thread, I call at various times (where msg is a string variable):

txtProcess.Invoke(new UpdateTextCallBack(this.UpdateRunStatus),msg);

There could be many messages sent to the text box and the error does not happen  every run, and if the text box has the focus(), it  has not occurred yet.  The text box is read only, but the user can change the focus to other controls while the thread is running.

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

************** Exception Text **************
System.NullReferenceException: Object reference not set to an instance of an object.
   at System.ComponentModel.PropertyDescriptorCollection.Find(String name, Boolean ignoreCase)
   at Infragistics.Win.BindableValueList.GetBoundValueHelper(ValueListItem item, String propertyName)
   at Infragistics.Win.BindableValueList.GetBoundDisplayText(ValueListItem item)
   at Infragistics.Win.ValueListItem.get_DisplayText()
   at Infragistics.Win.ValueList.DoesTextMatch(String text, String format, IFormatProvider formatProvider, ValueListItem item, ValueListItemMatchingMode itemMatchingMode)
   at Infragistics.Win.ValueListItemsCollection.GetItemFromDisplayTextOnly(Int32& lastValueListIndex, String displayText)
   at Infragistics.Win.ValueList.FindByDisplayText(Int32& lastValueListIndex, String displayText)
   at Infragistics.Win.ValueList.Infragistics.Win.IValueList.GetValue(String text, Int32& index)
   at Infragistics.Win.EditorWithTextUIElement.GetImage(String text, AppearanceData& appData)
   at Infragistics.Win.EditorWithTextUIElement.PositionChildElements()
   at Infragistics.Win.UIElement.VerifyChildElements(ControlUIElementBase controlElement, Boolean recursive)
   at Infragistics.Win.UIElement.VerifyChildElements(ControlUIElementBase controlElement, Boolean recursive)
   at Infragistics.Win.UIElement.VerifyChildElements(ControlUIElementBase controlElement, Boolean recursive)
   at Infragistics.Win.UIElement.DrawHelper(Graphics graphics, Rectangle invalidRectangle, Boolean doubleBuffer, AlphaBlendMode alphaBlendMode, Boolean clipText, Boolean forceDrawAsFocused, Boolean preventAlphaBlendGraphics)
   at Infragistics.Win.UIElement.Draw(Graphics graphics, Rectangle invalidRectangle, Boolean doubleBuffer, AlphaBlendMode alphaBlendMode, Boolean forceDrawAsFocused, Boolean preventAlphaBlendGraphics)
   at Infragistics.Win.ControlUIElementBase.Draw(Graphics graphics, Rectangle invalidRectangle, Boolean doubleBuffer, AlphaBlendMode alphaBlendMode, Size elementSize, Boolean preventAlphaBlendGraphics)
   at Infragistics.Win.ControlUIElementBase.Draw(Graphics graphics, Rectangle invalidRectangle, Boolean doubleBuffer, AlphaBlendMode alphaBlendMode, Size elementSize)
   at Infragistics.Win.ControlUIElementBase.Draw(Graphics graphics, Rectangle invalidRectangle, Boolean doubleBuffer, AlphaBlendMode alphaBlendMode)
   at Infragistics.Win.UltraControlBase.OnPaint(PaintEventArgs pe)
   at Infragistics.Win.UltraWinEditors.TextEditorControlBase.OnPaint(PaintEventArgs e)
   at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer)
   at System.Windows.Forms.Control.WmPaint(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)


************** Loaded Assemblies **************
mscorlib
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.269 (RTMGDR.030319-2600)
    CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/mscorlib.dll
----------------------------------------
Microsoft.VisualStudio.HostingProcess.Utilities
    Assembly Version: 10.0.0.0
    Win32 Version: 10.0.30319.1
    CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Microsoft.VisualStudio.HostingProcess.Utilities/10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualStudio.HostingProcess.Utilities.dll
----------------------------------------
System.Windows.Forms
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.278 built by: RTMGDR
    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
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.282 built by: RTMGDR
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
System
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.269 built by: RTMGDR
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
Microsoft.VisualStudio.HostingProcess.Utilities.Sync
    Assembly Version: 10.0.0.0
    Win32 Version: 10.0.30319.1
    CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Microsoft.VisualStudio.HostingProcess.Utilities.Sync/10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualStudio.HostingProcess.Utilities.Sync.dll
----------------------------------------
Microsoft.VisualStudio.Debugger.Runtime
    Assembly Version: 10.0.0.0
    Win32 Version: 10.0.30319.1
    CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Microsoft.VisualStudio.Debugger.Runtime/10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualStudio.Debugger.Runtime.dll
----------------------------------------
vshost32
    Assembly Version: 10.0.0.0
    Win32 Version: 10.0.30319.1
    CodeBase: file:///C:/Users/glenn/Documents/Visual%20Studio%202010/Projects/OTB/OTB/bin/Debug/OTB.vshost.exe
----------------------------------------
Microsoft.VisualBasic
    Assembly Version: 10.0.0.0
    Win32 Version: 10.0.30319.1 built by: RTMRel
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.VisualBasic/v4.0_10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualBasic.dll
----------------------------------------
System.Core
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.233 built by: RTMGDR
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Core/v4.0_4.0.0.0__b77a5c561934e089/System.Core.dll
----------------------------------------
System.DirectoryServices.AccountManagement
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.1 built by: RTMRel
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.DirectoryServices.AccountManagement/v4.0_4.0.0.0__b77a5c561934e089/System.DirectoryServices.AccountManagement.dll
----------------------------------------
System.Runtime.Serialization.Formatters.Soap
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.1 (RTMRel.030319-0100)
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Runtime.Serialization.Formatters.Soap/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Runtime.Serialization.Formatters.Soap.dll
----------------------------------------
System.Xml.Linq
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.1 built by: RTMRel
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml.Linq/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.Linq.dll
----------------------------------------
System.Data.DataSetExtensions
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.1 built by: RTMRel
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Data.DataSetExtensions/v4.0_4.0.0.0__b77a5c561934e089/System.Data.DataSetExtensions.dll
----------------------------------------
Microsoft.CSharp
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.1
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.CSharp/v4.0_4.0.0.0__b03f5f7f11d50a3a/Microsoft.CSharp.dll
----------------------------------------
System.Data
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.237 (RTMGDR.030319-2300)
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_32/System.Data/v4.0_4.0.0.0__b77a5c561934e089/System.Data.dll
----------------------------------------
System.Deployment
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.1 (RTMRel.030319-0100)
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Deployment/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Deployment.dll
----------------------------------------
System.Xml
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.233 built by: RTMGDR
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
OTB
    Assembly Version: 1.0.0.0
    Win32 Version: 1.0.0.0
    CodeBase: file:///C:/Users/glenn/Documents/Visual%20Studio%202010/Projects/OTB/OTB/bin/Debug/OTB.EXE
----------------------------------------
OTB_BAL
    Assembly Version: 1.0.0.0
    Win32 Version: 1.0.0.0
    CodeBase: file:///C:/Users/glenn/Documents/Visual%20Studio%202010/Projects/OTB/OTB/bin/Debug/OTB_BAL.DLL
----------------------------------------
Infragistics4.Win.UltraWinExplorerBar.v12.1
    Assembly Version: 12.1.20121.1001
    Win32 Version: 12.1.20121.1001
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/Infragistics4.Win.UltraWinExplorerBar.v12.1/v4.0_12.1.20121.1001__7dd5c3163f2cd0cb/Infragistics4.Win.UltraWinExplorerBar.v12.1.dll
----------------------------------------
Infragistics4.Win.v12.1
    Assembly Version: 12.1.20121.1001
    Win32 Version: 12.1.20121.1001
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/Infragistics4.Win.v12.1/v4.0_12.1.20121.1001__7dd5c3163f2cd0cb/Infragistics4.Win.v12.1.dll
----------------------------------------
Infragistics4.Win.UltraWinDock.v12.1
    Assembly Version: 12.1.20121.1001
    Win32 Version: 12.1.20121.1001
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/Infragistics4.Win.UltraWinDock.v12.1/v4.0_12.1.20121.1001__7dd5c3163f2cd0cb/Infragistics4.Win.UltraWinDock.v12.1.dll
----------------------------------------
Infragistics4.Win.UltraWinStatusBar.v12.1
    Assembly Version: 12.1.20121.1001
    Win32 Version: 12.1.20121.1001
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/Infragistics4.Win.UltraWinStatusBar.v12.1/v4.0_12.1.20121.1001__7dd5c3163f2cd0cb/Infragistics4.Win.UltraWinStatusBar.v12.1.dll
----------------------------------------
Infragistics4.Win.UltraWinToolbars.v12.1
    Assembly Version: 12.1.20121.1001
    Win32 Version: 12.1.20121.1001
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/Infragistics4.Win.UltraWinToolbars.v12.1/v4.0_12.1.20121.1001__7dd5c3163f2cd0cb/Infragistics4.Win.UltraWinToolbars.v12.1.dll
----------------------------------------
Infragistics4.Shared.v12.1
    Assembly Version: 12.1.20121.1001
    Win32 Version: 12.1.20121.1001
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/Infragistics4.Shared.v12.1/v4.0_12.1.20121.1001__7dd5c3163f2cd0cb/Infragistics4.Shared.v12.1.dll
----------------------------------------
Infragistics4.Win.UltraWinTabbedMdi.v12.1
    Assembly Version: 12.1.20121.1001
    Win32 Version: 12.1.20121.1001
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/Infragistics4.Win.UltraWinTabbedMdi.v12.1/v4.0_12.1.20121.1001__7dd5c3163f2cd0cb/Infragistics4.Win.UltraWinTabbedMdi.v12.1.dll
----------------------------------------
PromoDAL
    Assembly Version: 1.0.0.0
    Win32 Version: 1.0.0.0
    CodeBase: file:///C:/Users/glenn/Documents/Visual%20Studio%202010/Projects/OTB/OTB/bin/Debug/PromoDAL.DLL
----------------------------------------
CCommon
    Assembly Version: 1.0.0.0
    Win32 Version: 1.0.0.0
    CodeBase: file:///C:/Users/glenn/Documents/Visual%20Studio%202010/Projects/OTB/OTB/bin/Debug/CCommon.DLL
----------------------------------------
Microsoft.Practices.EnterpriseLibrary.Data
    Assembly Version: 5.0.414.0
    Win32 Version: 5.0.414.0
    CodeBase: file:///C:/Users/glenn/Documents/Visual%20Studio%202010/Projects/OTB/OTB/bin/Debug/Microsoft.Practices.EnterpriseLibrary.Data.DLL
----------------------------------------
Microsoft.Practices.EnterpriseLibrary.Common
    Assembly Version: 5.0.414.0
    Win32 Version: 5.0.414.0
    CodeBase: file:///C:/Users/glenn/Documents/Visual%20Studio%202010/Projects/OTB/OTB/bin/Debug/Microsoft.Practices.EnterpriseLibrary.Common.DLL
----------------------------------------
System.Transactions
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.1 (RTMRel.030319-0100)
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_32/System.Transactions/v4.0_4.0.0.0__b77a5c561934e089/System.Transactions.dll
----------------------------------------
System.Configuration
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.1 (RTMRel.030319-0100)
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Configuration/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
System.EnterpriseServices
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.1 (RTMRel.030319-0100)
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_32/System.EnterpriseServices/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.EnterpriseServices.dll
----------------------------------------
Infragistics4.Win.Misc.v12.1
    Assembly Version: 12.1.20121.1001
    Win32 Version: 12.1.20121.1001
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/Infragistics4.Win.Misc.v12.1/v4.0_12.1.20121.1001__7dd5c3163f2cd0cb/Infragistics4.Win.Misc.v12.1.dll
----------------------------------------
Infragistics4.Win.UltraWinEditors.v12.1
    Assembly Version: 12.1.20121.1001
    Win32 Version: 12.1.20121.1001
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/Infragistics4.Win.UltraWinEditors.v12.1/v4.0_12.1.20121.1001__7dd5c3163f2cd0cb/Infragistics4.Win.UltraWinEditors.v12.1.dll
----------------------------------------
Accessibility
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.1 built by: RTMRel
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/Accessibility/v4.0_4.0.0.0__b03f5f7f11d50a3a/Accessibility.dll
----------------------------------------
C1.C1Report.4
    Assembly Version: 4.6.20122.54512
    Win32 Version: 4.6.20122.54512
    CodeBase: file:///C:/Users/glenn/Documents/Visual%20Studio%202010/Projects/OTB/OTB/bin/Debug/C1.C1Report.4.DLL
----------------------------------------
System.Numerics
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.1 built by: RTMRel
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Numerics/v4.0_4.0.0.0__b77a5c561934e089/System.Numerics.dll
----------------------------------------
Microsoft.Practices.Unity
    Assembly Version: 2.0.414.0
    Win32 Version: 2.0.414.0
    CodeBase: file:///C:/Users/glenn/Documents/Visual%20Studio%202010/Projects/OTB/OTB/bin/Debug/Microsoft.Practices.Unity.DLL
----------------------------------------
C1.Win.C1FlexGrid.4
    Assembly Version: 4.6.20122.698
    Win32 Version: 4.6.20122.698
    CodeBase: file:///C:/Users/glenn/Documents/Visual%20Studio%202010/Projects/OTB/OTB/bin/Debug/C1.Win.C1FlexGrid.4.DLL
----------------------------------------
Infragistics4.Win.UltraWinTabControl.v12.1
    Assembly Version: 12.1.20121.1001
    Win32 Version: 12.1.20121.1001
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/Infragistics4.Win.UltraWinTabControl.v12.1/v4.0_12.1.20121.1001__7dd5c3163f2cd0cb/Infragistics4.Win.UltraWinTabControl.v12.1.dll
----------------------------------------
Infragistics4.Win.UltraWinGrid.v12.1
    Assembly Version: 12.1.20121.1001
    Win32 Version: 12.1.20121.1001
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/Infragistics4.Win.UltraWinGrid.v12.1/v4.0_12.1.20121.1001__7dd5c3163f2cd0cb/Infragistics4.Win.UltraWinGrid.v12.1.dll
----------------------------------------
sjxsjyle
    Assembly Version: 4.6.20122.54512
    Win32 Version: 4.0.30319.269 built by: RTMGDR
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll
----------------------------------------

************** JIT Debugging **************
To enable just-in-time (JIT) debugging, the .config file for this
application or computer (machine.config) must have the
jitDebugging value set in the system.windows.forms section.
The application must also be compiled with debugging
enabled.

For example:

<configuration>
    <system.windows.forms jitDebugging="true" />
</configuration>

When JIT debugging is enabled, any unhandled exception
will be sent to the JIT debugger registered on the computer
rather than be handled by this dialog box.


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  • 469350
    Offline posted

    Hi,

    From the call stack here, it looks like you must be using UltraComboEditor, not UltraTextEditor. Is that right? It probably doesn't make any difference, I just want to make sure we're on the same page and that you are looking at the right control. Since the call stack is trying to look at the ValueList and UltraTextEditor doesn't have one, it seems like this has to be an UltraComboEditor.

    Anyway, the control appears to be blowing up while painting. This is what often happens when there is a threading issue. And the fact you mentioned you are using multiple threads seems to bear that out. You seem to be doing things correct, calling Invoke on the control. I don't see anything wrong there.

    I think what I would do is put a check into your UpdateRunStatus method and check:

    txtStatus.InvokeRequired. If that ever returns true, you've got a problem. It probably means that you are calling that method without invoking.

    If that does not help, then I'm not sure what else could be going on. The code you have posted here looks okay to me, so my best guess would be that the exception is related to some other code in your application that is not invoking properly and maybe you are looking at the wrong control.

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