Question

上传文件时，我收到错误 - 超出范围异常

我添加了下面的代码试图摆脱它！ - 用vb写的

  dim filesize as string = FileUploadVal.PostedFile.ContentLength 
  If filesize > 1048576 then 
     des_label = "File is too large!"
  End if

但仍然出现错误，有没有办法在上传之前设置文件限制？

Answer 1

文件大小将大于web.config中的允许限制。您可以设置HttpRuntimeSection.MaxRequestLength以限制上传文件大小。

MaxRequestLength属性指定缓冲的限制输入流的阈值。例如，可以使用此限制防止由发布的用户引起的拒绝服务攻击大文件到服务器MSDN

<httpRuntime
   executionTimeout = "HH:MM:SS" 
   maxRequestLength = "number" 
   requestLengthDiskThreshold = "number" 
   useFullyQualifiedRedirectUrl = "[True|False]" 
   minFreeThreads = "number" 
   minLocalRequestFreeThreads = "number" 
   appRequestQueueLimit = "number"
   enableKernelOutputCache = "[True|False]" 
   enableVersionHeader = "[True|False]" 
   apartmentThreading = "[True|False]"
   requireRootedSaveAsPath = "[True|False]"
   enable = "[True|False]" 
   sendCacheControlHeader = "[True|False]" 
   shutdownTimeout = "HH:MM:SS"
   delayNotificationTimeout = "HH:MM:SS"
   waitChangeNotification = "number" 
   maxWaitChangeNotification = "number" 
   enableHeaderChecking = "[True|False]" 
/>

如何在FileUpload Control上设置文件大小限制

1 个答案: