Sharepoint - Downloaded Files Corrupted?
Aug 5, 2010
I have written the following code to download a file from sharepoint. The downloded file works fine in only some machines. For others, it says that the file is corrupted. The issue is for MS Office and image files, however the PDF is not having any issues. We have identified the issue of corruption as due to the addition of a hexadecimal number at the top of the file contents. When it is removed, the file gets opened correctly. The hexadecimal character has been traced out to be representing the file size in bytes. Why this is happening only in some machines and how can we fix it?
private void DownloadFile()
{
SPListItem item = GetFileFromSharepoint();
[code]...
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[Code]....
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Data:System.Collections.ListDictionaryInternal Browser Capabilities
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[FormatException: Invalid character in a Base-64 string.]
System.Convert.FromBase64String(String s) +0
System.Web.UI.ObjectStateFormatter.Deserialize(String inputString) +102
System.Web.UI.Util.DeserializeWithAssert(IStateFormatter formatter, String serializedState) +59
System.Web.UI.HiddenFieldPageStatePersister.Load() +124
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User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.1; .NET4.0C)
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[HttpException (0x80004005): The state information is invalid for this page and might be corrupted.]
System.Web.UI.ViewStateException.ThrowError(Exception inner, String persistedState, String errorPageMessage, Boolean macValidationError) +148
System.Web.UI.HiddenFieldPageStatePersister.Load() +10956310
System.Web.UI.Page.LoadPageStateFromPersistenceMedium() +11040040
System.Web.UI.Page.LoadAllState() +46
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +11035559
System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +11035098
System.Web.UI.Page.ProcessRequest() +91
System.Web.UI.Page.ProcessRequest(HttpContext context) +240
ASP.default_aspx.ProcessRequest(HttpContext context) +52
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +599
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +171
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Jun 22, 2010
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Source File: c:WINDOWSMicrosoft.NETFrameworkv2.0.50727Temporary ASP.NET Filesemportalermal7c94fef4cccf3353App_Web_mtkk1qfn.6.cs Line: 0
Stack Trace:
[FormatException: Invalid character in a Base-64 string.]
System.Convert.FromBase64String(String s) +0
System.Web.UI.ObjectStateFormatter.Deserialize(String inputString) +72
System.Web.UI.ObjectStateFormatter.System.Web.UI.IStateFormatter.Deserialize(String serializedState) +4
System.Web.UI.Util.DeserializeWithAssert(IStateFormatter formatter, String serializedState) +37
System.Web.UI.HiddenFieldPageStatePersister.Load() +113
[ViewStateException: Invalid viewstate.
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Port:
User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)
ViewState: 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...]
[HttpException (0x80004005): The state information is invalid for this page and might be corrupted.]
System.Web.UI.ViewStateException.ThrowError(Exception inner, String persistedState, String errorPageMessage, Boolean macValidationError) +106
System.Web.UI.ViewStateException.ThrowViewStateError(Exception inner, String persistedState) +14
System.Web.UI.HiddenFieldPageStatePersister.Load() +217
System.Web.UI.Page.LoadPageStateFromPersistenceMedium() +105
System.Web.UI.Page.LoadAllState() +43
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +6785
System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +242
System.Web.UI.Page.ProcessRequest() +80
System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context) +21
System.Web.UI.Page.ProcessRequest(HttpContext context) +49
ASP.al_page_aspx.ProcessRequest(HttpContext context) in c:WINDOWSMicrosoft.NETFrameworkv2.0.50727Temporary ASP.NET Filesemportalermal7c94fef4cccf3353App_Web_mtkk1qfn.6.cs:0
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +181
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75
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Code:
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[URL]
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