Hi,
We are facing the same exception that Srini Gokidi described, but we are experiencing it on a development machine. NOTE: We are using version 8.103.0.30 (with a patch applied).
Event code: 3005
Event message: An unhandled exception has occurred.
Event time: 10/05/2011 09:49:47
Event time (UTC): 10/05/2011 06:49:47
Event ID: 4df9d355a98348629d2a27e004cd5ea7
Event sequence: 395
Event occurrence: 1
Event detail code: 0
Application information:
Application domain: /LM/W3SVC/1/ROOT/Validata/WebServer-5-129494835090989287
Trust level: Full
Application Virtual Path: /Validata/WebServer
Application Path: C:\inetpub\wwwroot\Validata\WebServer\
Machine name: DEV12
Process information:
Process ID: 10104
Process name: w3wp.exe
Account name: NT AUTHORITY\NETWORK SERVICE
Exception information:
Exception type: ArgumentNullException
Exception message: Value cannot be null.
Parameter name: Node can't be null
Request information:
Request URL:
http://localhost/Validata/WebServer/BPManager/ImgRequest.ashx?dID=4da3d2a6-d909-4dcc-9784-dd856dba468f&nName=6583707-6583701&recLeft=3&recTop=2&recRight=687&recBottom=636&DrawPorts=true&t=TueAn unhandled exception has occurred.C%2010%20May%202011%2006%3A49%3A38%20GMT
Request path: /Validata/WebServer/BPManager/ImgRequest.ashx
User host address: ::1
User: Admin
Is authenticated: True
Authentication Type: Forms
Thread account name: DEV12\validata_user
Thread information:
Thread ID: 37
Thread account name: DEV12\validata_user
Is impersonating: True
Stack trace: at Syncfusion.Web.UI.WebControls.Diagram.DiagramUtils.GetBitmapNodeSize(Node node, Single fMagnification)
at Syncfusion.Web.UI.WebControls.Diagram.NodeRenderHandler.RenderNode(HttpContext context, View dgmView, String strNodeName, Boolean& bSync, RenderOptimizations renderOpt)
at Syncfusion.Web.UI.WebControls.Diagram.NodeRenderHandler.ProcessRequest(HttpContext context)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
In this case, it seems that the exception is with a connector node (since the value of nName is 6583707-6583701). Unfortunately we haven't yet found a way to reproduce the issue consistently, it just happens from time to time.
Unfortunately when such an exception occurs, it seems to bring down the entire web application, i.e. there are no responses to HTTP requests, unless we do iisreset. Could you advice us how to limit the effects of this failure?
