如何利用封闭式XML转换成字节格式转换生成excel文件

问题描述

你好我使用closedxML DLL文件导出到Excel我有这样下面

Hi I am using closedxML DLL for exporting to excel i have static method like this below

    public static void WriteToExcel(string fileName, List<CP> pages)
    {
        var wb = new XLWorkbook();
        byte[] file;


        var ws = wb.Worksheets.Add("CPs");
        WriteCostHeader(ws);

        ////write all the header columns
        //for (int i = 0; i < pages.Count; i++)
        int iRow = 2;
        foreach(var page in pages)
        {
            WriteCostPage(ws, page, iRow++);

            WriteCostItemHead(ws, iRow++);

            foreach(var item in page.Items)
            {
                WriteCostItem(ws, item, iRow++);
            }
            iRow++;
        }

       wb.SaveAs(fileName);
    }

我打电话上述功能在这样的方法，下面

I am calling above function in a method like this below

public  static List<CP> Init()
{

    //binding items to to list
}

static void Main(string[] args)
{
      byte[] file;
      file = ExcelProvider.WriteToExcel("D:\\Temp\\Test1.xls", Init());
      //Console.WriteLine("done");
      //Console.ReadLine();
 }

 public byte[] CreatePackage()
 {
     string fileName = string.Format("{0}.xlsx", "Generated");
     byte[] excelFile;
     // getting error here cannot convert void to byte[]
     excelFile =  ExcelProvider.WriteToExcel(fileName, Init());
 }

但我需要得到这一结果的Excel工作表中的字节，我需要将其存储在内存流后，我可以用于进一步的目的。

but i need to get that result excel sheet in bytes, I need to store it in memory stream later i can use for further purpose ..

但我不知道我怎样才能得到字节格式创建的Excel文件...

But I am not sure how can i get the created excel file in bytes format...

会不会有人请给这一个任何想法或解决方案...许多在此先感谢...

Would any one pls give any idea or solutions on this one ...Many thanks In advance ...

推荐答案

请做到这一点： -

Please do this:-

//打开文件到文件流

//Open the File into file stream

    FileStream fileStream = new FileStream(Server.MapPath(fileName), FileMode.Open, FileAccess.Read, FileShare.Read);




    //Create and populate a memorystream with the contents of the

    MemoryStream mstream = StreamToMemory(fileStream);

    // delete the file when it is been added to memory stream

    File.Delete(Server.MapPath(fileName));

    //Convert the memorystream to an array of bytes.

    byte[] byteArray = mstream.ToArray();

    //Clean up the memory stream

    mstream.Flush();

    mstream.Close();

    // Clear all content output from the buffer stream

    Response.Clear();

    // Add a HTTP header to the output stream that specifies the default filename

    // for the browser's download dialog

    Response.AddHeader("Content-Disposition", "attachment; filename=QatargasTimesheet-" + ((DateTime)rdDate.SelectedDate).ToString("MMM yyyy") + ".xls");

    // Add a HTTP header to the output stream that contains the

    // content length(File Size). This lets the browser know how much data is being transfered

    Response.AddHeader("Content-Length", byteArray.Length.ToString());

    // Set the HTTP MIME type of the output stream

    Response.ContentType = "application/octet-stream";

    // Write the data out to the client.

    Response.BinaryWrite(byteArray);

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