C＃不知道如何處理System.Web.HttpResponse

當我在本地機器上使用此類時，它會提示用戶打開xlsx文件，但是當我發佈到Azure時，它不再有效。我很確定我的問題是，我沒有在Azure上處理文件流。希望有人能幫助我。C＃不知道如何處理System.Web.HttpResponse

，當我在本地發佈的作品的代碼 -

if (vm.ExportClicked != null && vm.ExportClicked.ToLower() == "true") 
      { 
       //doing this because I need the entire list not just a single page 
       CustomerLastOrderListViewModel vm1 = new CustomerLastOrderListViewModel(); 
       var oPagedCustomerLists = oFilteredCustomerList.OrderByDescending(c => c.Id); 

       //.ToList(); 
       List<CustomerLastOrderViewModel> customersLastOrders = CombineWithLastOrder(oPagedCustomerLists.ToList()); 
       vm1.CustomersLastOrder = customersLastOrders; 
       DataTable dt = CreateCustomerEmailData(vm1, form); 
       CreateExcelFile.CreateExcelDocument(dt, "CustomerEmailList.xlsx", HttpContext.ApplicationInstance.Response);

我使用的這種反應，因爲我不能讓它與別的編譯。 Excel類在文件流中返回信息，我想知道，因爲我在Azure上，並且沒有安裝Excel，所以我必須做一些不同的事情。

這是CreateExcelDocument -

public static bool CreateExcelDocument(DataTable dt, string filename, System.Web.HttpResponse Response) 
    { 
     try 
     { 
      DataSet ds = new DataSet(); 
      ds.Tables.Add(dt); 
      CreateExcelDocumentAsStream(ds, filename, Response); 
      ds.Tables.Remove(dt); 
      return true; 
     } 
     catch (Exception ex) 
     { 
      Trace.WriteLine("Failed, exception thrown: " + ex.Message); 
      return false; 
     } 
    } 

public static bool CreateExcelDocumentAsStream(DataSet ds, string filename, System.Web.HttpResponse Response) 
{ 
    try 
    { 
     System.IO.MemoryStream stream = new System.IO.MemoryStream(); 
     using (SpreadsheetDocument document = SpreadsheetDocument.Create(stream, SpreadsheetDocumentType.Workbook, true)) 
     { 
      WriteExcelFile(ds, document); 
     } 
     stream.Flush(); 
     stream.Position = 0; 

     Response.ClearContent(); 
     Response.Clear(); 
     Response.Buffer = true; 
     Response.Charset = ""; 

     // NOTE: If you get an "HttpCacheability does not exist" error on the following line, make sure you have 
     // manually added System.Web to this project's References. 

     Response.Cache.SetCacheability(System.Web.HttpCacheability.NoCache); 
     Response.AddHeader("content-disposition", "attachment; filename=" + filename); 
     Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"; 
     byte[] data1 = new byte[stream.Length]; 
     stream.Read(data1, 0, data1.Length); 
     stream.Close(); 
     Response.BinaryWrite(data1); 
     Response.Flush(); 
     Response.End(); 

     return true; 
    } 
    catch (Exception ex) 
    { 
     Trace.WriteLine("Failed, exception thrown: " + ex.Message); 
     return false; 
    } 
}

來源

2014-03-28 Craig

此代碼是客戶端還是服務器端？我有點困惑...還有哪裏來了這個'CreateExcelDocumentAsStream'方法來自哪裏？它似乎不是.NET – evanmcdonnal

服務器端的一部分。CreateExeclDoctumentAsStream是excel類的一部分。將添加上面。 – Craig

在CreateExcelDocument嘗試改變這一點;

CreateExcelDocumentAsStream(ds, filename, Response);

To;

CreateExcelDocumentAsStream(ds, filename, Response.OutputStream);

我敢肯定你傳遞一個HttpResponse時，它接受一個Stream（或至少我推斷，從方法名，我無法找到任何文件，所以我假設它的所有權）。

來源

2014-03-28 17:53:38 evanmcdonnal

C＃不知道如何處理System.Web.HttpResponse

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