下載後文件損壞

我在ASP.NET（VB.NET）中下載後打開文件時收到以下錯誤 - 遠程服務器共享路徑中有文件。下載後文件損壞

使用下面的代碼是下載一個文件：

Private Sub downloadFile(ByVal file As String) 

    Try 
     Dim requestFile As String = "\\ashleyfurniture\afi-dfs\Arcadia\Vaults\Web\AshleyDirectAttachments\IdeaNetwork\Images" + "\" + file 

     If String.IsNullOrEmpty(requestFile) Then 
      Throw New FileNotFoundException("File to download cannot be null or empty") 
     End If 

     ' Get file name from URI string in C# 

     Dim uri = New Uri(requestFile) 
     Dim filename As String = Path.GetFullPath(uri.OriginalString) 
     Dim fileInfo = New FileInfo((uri.OriginalString)) 

     If Not fileInfo.Exists Then 
      Throw New FileNotFoundException("File to download was not found", uri.OriginalString) 
     End If 


     Response.ContentType = "application/octet-stream" 

     Response.AddHeader("Content-Disposition", "attachment; filename=""" + fileInfo.Name + """") 
     Response.WriteFile(fileInfo.FullName) 
     Response.End() 



     ' ignore exception 
    Catch generatedExceptionName As ThreadAbortException 

    Catch ex As FileNotFoundException 
     Response.StatusCode = CInt(System.Net.HttpStatusCode.NotFound) 
     Response.StatusDescription = ex.Message 
    Catch ex As Exception 
     Response.StatusCode = CInt(System.Net.HttpStatusCode.InternalServerError) 
     Response.StatusDescription = String.Format("Error downloading file: {0}", ex.Message) 
    End Try 



End Sub

來源

2017-10-13 Caroline Dancy

的contentType中如果您在打開損壞的文件十六進制編輯器（甚至是文本編輯器），它是否以一些看起來像網頁的文本開始？ –

明確地缺少'Response.Clear（）'在'Response.ContentType'之前，以確保管道不會在這裏附加當前處理的頁面。我還會在Response.End（）之前添加'Response.Flush（）'。 –

與Wiktor的Zychla同意

嘗試刪除您迴應

Response.ContentType = "application/octet-stream"

來源

2017-10-13 11:55:01 ChiragMM

下載後文件損壞

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