重定向到操作/保存表单并从按钮打印PDF

Question

我的应用程序是MVC3（ASPX视图）。 我有一个窗体，在"编辑"视图中，我有保存按钮，用于保存窗体并返回到索引页，另一个按钮用于在与"编辑"相同的控制器中从另一个 ActionResult 打印 PDF;有没有办法从一个按钮保存和打印 PDF？这是我的编辑视图脚本：

 public ActionResult EditCTAH(long learnerID = 0, long caseListID = 0)
    {
        ViewBag.caseListID = (long)Session["_CTA_CaseListId"];
        try
        {
            CTAHFormEdit ctform = _learnerscaseListsSvc.GetCTAHForm(learnerID, caseListID);
            return View(ctform);
        }
        catch
        {
            return null;
        }
    }
    [HttpPost]
    public ActionResult EditCATH(CTAHFormEdit ctform)
    {
        if (ModelState.IsValid)
        {
            _learnerscaseListsSvc.EditCTAHForm(ctform);
            long courseId = (long)Session["_CTA_CourseId"];
            long caseId = (long)Session["_CTA_CaseId"];
            long caselistId = (long)Session["_CTA_CaseListId"];
            return RedirectToAction("Index", new { courseId = courseId, caseId = caseId, caselistId = caselistId });
        }
        return View(ctform);
    }

以下是打印 PDF 的脚本：

   public ActionResult EvaluationCATH_PDF(long learnerID = 0, long caseListID = 0)
        {
            try
            {
.....
    pdfStamper.Close();
                byte[] byteInfo = workStream.ToArray();
                SendPdfToBrowser(byteInfo, cth.Learner_ID, cth.StudyCase_ID);
                return null;
            }
            catch
            {
                return null;
            }
        }

提前谢谢。

Answer 1

如果您想在编辑操作的保存中获取PDF，您可以重定向到将PDF返回到浏览器的操作方法

[HttpPost]
public ActionResult EditCATH(CTAHFormEdit ctform)
{
    if (ModelState.IsValid)
    {
     //Saved succesfully, lets show the pdf in browser.
      return RedirectToAction("Print",new { id=someIdValue});
    }
    return View(ctform);
}
public ActionResult Print(string id)
{
   byte[] pdfByteArray=GetByteArrayFromPassedID(id);
   return File(pdfByteArray,"application/pdf","somefriendlyname.pdf");
}