c# – 导出到excel抛出System.OutOfMemoryException

这是我使用的封闭式XML代码http://closedxml.codeplex.com/wikipage?title=How%20do%20I%20deliver%20an%20Excel%20file%20in%20ASP.NET%3f&referringTitle=Documentation

public HttpResponseMessage Get()
            {
            // Create the workbook
            var workbook = new XLWorkbook();
            Datatable dt = getDataTable();
            workbook.Worksheets.Add(dt);

            // Prepare the response
            HttpResponseMessage response = new HttpResponseMessage(HttpStatusCode.OK);
            var memoryStream = new MemoryStream(); // If I put this in a 'using' construct,I never get the response back in a browser.
            workbook.SaveAs(memoryStream);
            memoryStream.Seek(0,SeekOrigin.Begin); // Seem to have to manually rewind stream before applying it to the content.
            response.Content = new StreamContent(memoryStream);
            response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
            response.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment") { FileName = "HelloWorld.xlsx" };
            return response;
            }