将 MemoryStream 写入响应对象

我正在使用以下代码来传输 MemoryStream 对象中的 pptx，但是当我打开它时，我在 PowerPoint 中收到修复消息，将 MemoryStream 写入响应对象的正确方法是什么？

HttpResponse response = HttpContext.Current.Response;
response.Clear();
response.AppendHeader("Content-Type", "application/vnd.openxmlformats-officedocument.presentationml.presentation");
response.AppendHeader("Content-Disposition", string.Format("attachment;filename={0}.pptx;", getLegalFileName(CurrentPresentation.Presentation_NM)));                
response.BinaryWrite(masterPresentation.ToArray());
response.End();

我遇到了同样的问题，唯一有效的解决方案是：

Response.Clear();
Response.ContentType = "Application/msword";
Response.AddHeader("Content-Disposition", "attachment; filename=myfile.docx");
Response.BinaryWrite(myMemoryStream.ToArray());
// myMemoryStream.WriteTo(Response.OutputStream); //works too
Response.Flush();
Response.Close();
Response.End();