爲什麼此ASP.NET堆棧跟蹤同時報告兩個異常？

在Sharepoint網站上，用戶嘗試再次響應他已經回覆的調查。 IIS返回HTTP 500並提供頁面出現以下錯誤信息：爲什麼此ASP.NET堆棧跟蹤同時報告兩個異常？

Server Error in '/' Application. 
-------------------------------------------------------------------------------- 
You are not allowed to respond again to this survey. 

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.Runtime.InteropServices.COMException: You are not allowed to respond again to this survey. 

Source Error: 

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. 

Stack Trace: 

[COMException (0x81020039): You are not allowed to respond again to this survey.] 
    Microsoft.SharePoint.Library.SPRequestInternalClass.IsVotingAllowed() +0 
    Microsoft.SharePoint.Library.SPRequest.IsVotingAllowed() +174 
[SPException: You are not allowed to respond again to this survey.] 
    Microsoft.SharePoint.Library.SPRequest.IsVotingAllowed() +312 
    Microsoft.SharePoint.WebPartPages.ListFormWebPart.OnInit(EventArgs e) +955 
    System.Web.UI.Control.InitRecursive(Control namingContainer) +143 
    System.Web.UI.Control.AddedControl(Control control, Int32 index) +271 
    System.Web.UI.WebControls.WebParts.WebPartManagerControlCollection.AddWebPartHelper(WebPart webPart) +305 
    System.Web.UI.WebControls.WebParts.WebPartManagerControlCollection.AddWebPart(WebPart webPart) +1930590 
    System.Web.UI.WebControls.WebParts.WebPartManagerInternals.AddWebPart(WebPart webPart) +63 
    Microsoft.SharePoint.WebPartPages.SPWebPartManager.AddWebPartWithRetry(WebPart webPart) +147 
    Microsoft.SharePoint.WebPartPages.SPWebPartManager.AddDynamicWebPart(WebPart webPart) +122 
    Microsoft.SharePoint.WebPartPages.SPWebPartManager.CreateWebPartsFromRowSetData(Boolean onlyInitializeClosedWebParts) +12053 
    Microsoft.SharePoint.WebPartPages.SPWebPartManager.LoadWebParts() +93 
    Microsoft.SharePoint.WebPartPages.SPWebPartManager.OnPageInitComplete(Object sender, EventArgs e) +690 
    System.EventHandler.Invoke(Object sender, EventArgs e) +0 
    System.Web.UI.Page.OnInitComplete(EventArgs e) +11038910 
    System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1674

目前正處在有報道兩個例外 - System.Runtime.InteropServices.COMException和SPException。

這怎麼可能？在ASP.NET級發生了什麼情況，同時報告了兩個異常？

來源

2012-06-01 sharptooth

一個是另一個的內部例外。

來源

2012-06-01 13:41:30

我猜'COMException'是'SPException'的內部，不是嗎？ – sharptooth

@sharptooth - 它必須是:-) –

爲什麼此ASP.NET堆棧跟蹤同時報告兩個異常？

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