导出 Excel 数据时重定向到操作不起作用

Question

public ActionResult FileDownload(Files FileData)
{
    dynamic data = FileDownload(FileData);
    var Platform= Enum.Parse(typeof(Platform),FileData.PlatformNo.ToString());
    var fileName = "_Orders_" + FileData.CountryCode + "_" + FileData.Month 
                   + "_" + FileData.Year + "_" + Platform + "_" + FileData.Currency;
    var workSheetName = "_File";

    ExcelHelper.ExportToExcel(data, workSheetName, fileName, "A1:Y1", Response, 6, 7, 8);

    return RedirectToAction("AzureDetail", new { id = FileData.FileId, FileData });
}

---

<td>
  <a ng-click="post('/Plan/FileDownload',FileData)" class="btn btn-primary btn-xs">Download</a>
</td>

By running this piece of code, I am not able to debug into azure detail view, it doesn't debug RedirectToAction .

Moreover I want to download the Excel file and perform page refresh at the same time. I have gone through many solutions that say "both page refresh and download can't be handled in one response" or "you can handle this in JavaScript by setTimeout() ".

Is there anything that I can use only at the code behind to do this?

Answer 1

The action can only have one single result. You cannot download a file and redirect to another action at the same time, because those are two action results.

What many websites do is they open the action to download the file in a popup tab/window. This way, your current window is still able to run JavaScript/Ajax to do other actions like redirecting to another page. But this solution has the downside of using popups which modern browsers block, so the user has to accept allowing popups (temporary or permanently) for your website.

As you mentioned in your question, you can also handle this in JavaScript, either by using setTimeout() or other mechanisms. As you can see, any solution for this dilemma involves using JavaScript in one way or another. That's because the server can only respond to the client with one response. So JavaScript must be used to send more than one request to the server.