将文件保存在文档库中的现有文件上的 Sharepoint 问题

Question

我在文档库中有一个现有文档，我正在尝试使用如下代码在代码中覆盖该文件:

byte[] data = ...
SPListItem li = ...
li.File.SaveBinary(data);

当我运行此代码时，我得到:

Microsoft.SharePoint.SPException: The security validation for this page is invalid. Click Back in your Web browser, refresh the page, and try your operation again. ---> System.Runtime.InteropServices.COMException (0x8102006D): The security validation for this page is invalid. Click Back in your Web browser, refresh the page, and try your operation again.
    at Microsoft.SharePoint.Library.SPRequestInternalClass.PutFile(String bstrUrl, String bstrWebRelativeUrl, Object varFile, PutFileOpt PutFileOpt, String bstrCreatedBy, String bstrModifiedBy, Int32 iCreatedByID, Int32 iModifiedByID, Object varTimeCreated, Object varTimeLastModified, Object varProperties, String bstrCheckinComment, UInt32& pdwVirusCheckStatus, String& pVirusCheckMessage)
    at Microsoft.SharePoint.Library.SPRequest.PutFile(String bstrUrl, String bstrWebRelativeUrl, Object varFile, PutFileOpt PutFileOpt, String bstrCreatedBy, String bstrModifiedBy, Int32 iCreatedByID, Int32 iModifiedByID, Object varTimeCreated, Object varTimeLastModified, Object varProperties, String bstrCheckinComment, UInt32& pdwVirusCheckStatus, String& pVirusCheckMessage)
    --- End of inner exception stack trace ---
    at Microsoft.SharePoint.Library.SPRequest.PutFile(String bstrUrl, String bstrWebRelativeUrl, Object varFile, PutFileOpt PutFileOpt, String bstrCreatedBy, String bstrModifiedBy, Int32 iCreatedByID, Int32 iModifiedByID, Object varTimeCreated, Object varTimeLastModified, Object varProperties, String bstrCheckinComment, UInt32& pdwVirusCheckStatus, String& pVirusCheckMessage)
    at Microsoft.SharePoint.SPFile.SaveBinary(Byte[] file, String checkInComment, Boolean checkRequiredFields, Boolean bIsMigrate, Boolean bIsPublish, SPUser modifiedBy, DateTime timeLastModified, SPVirusCheckStatus& virusCheckStatus, String& virusCheckMessage)
    at Microsoft.SharePoint.SPFile.SaveBinary(Byte[] file, Boolean checkRequiredFields, Boolean bIsMigrate, Boolean bIsPublish, SPUser modifiedBy, DateTime timeLastModified)
    at Microsoft.SharePoint.SPFile.SaveBinary(Byte[] file, Boolean checkRequiredFields)
    at Microsoft.SharePoint.SPFile.SaveBinary(Byte[] file)
    at TestClass.UploadFile()

我在与 sharepoint 位于同一站点的表单上运行此代码，并且运行该代码的用户可以手动上传文件就好了。我需要先删除文件吗？一探究竟？

Answer 1

试试这个来修复它:

SPSecurity.RunWithElevatedPrivileges(delegate
{
  using (SPSite elevSite = new SPSite(currentWeb.Site.ID))
  {
    using (SPWeb elevWeb = elevSite.OpenWeb(currentWeb.ID))
    {
      elevWeb.AllowUnsafeUpdates = true;
      // ...
    }
  }
}