C# 浏览器进行下载PDF

Question

如何用C#写代码，浏览器进行下载服务器中PDF文件
有MemoryStream 流

Answer 1

 Document document = new Document(PageSize.A4.Rotate(), 70, 70, 70, 0);
 var memoryStream = new MemoryStream();
 PdfWriter pw = PdfWriter.GetInstance(document, memoryStream);
 document.Open();
// pdf内容生成...
byte[] fileByte = memoryStream.GetBuffer();
string fileName = Request.PhysicalApplicationPath +"1111.pdf";
FileStream fs = new FileStream(fileName, FileMode.Create);
BinaryWriter bw = new BinaryWriter(fs);
bw.Write(fileByte);
bw.Close();
 fs.Close();
 StringBuilder script = new StringBuilder();
 script.Append("<script type='text/javascript'> \n");
 script.AppendFormat("window.open ('../../pdf/{0}','newwindow','height=800,width=1200,top=0,left=0,toolbar=no,menubar=no,scrollbars=no, resizable=yes,location=no, status=no') ", fileName);            
 script.Append("</script>");
ScriptManager.RegisterStartupScript(this,this.GetType(), "execSctipt_" + DateTime.Now.ToString("yyyyMMddHHmmss"),
                script.ToString(),false);

用itext 5 生成pdf