How do I pass response from one controller to another in MVC?

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I have a controller named clientjobdescriptionscontroller.cs.

C#

//clientjobdescriptionscontroller.cs
[HttpGet]
    public void Download(string format, string requests)
    {
        List<string> req = requests.Split(',').ToList();
        foreach (var item in req)
        {
            RequestController controller = new RequestController();
            if (format == "I")
            {
                Response.Write("rakesh");
                controller.DownloadrequirementsInternalUse(Convert.ToInt64(item));
            }
            if (format == "R")
            {
                controller.DownloadrequirementsRecruitmentPartner(Convert.ToInt64(item));
            }
            if (format == "CA")
            {
                controller.DownloadrequirementsCandidate(Convert.ToInt64(item));
            }
            if (format == "CR")
            {
                controller.Downloadrequirementscustomer(Convert.ToInt64(item));
            }
        }
    }

again I have another controller named RequestController. The methods from this controller is getting called in the first controller.

C#

// RequestController
public void DownloadrequirementsInternalUse(long Id)
    {
        var result = requestService.GetResourceAvailability(Id);

        JobDescriptionPdfDownload jobDescriptionPdfDownload = new JobDescriptionPdfDownload();
        string strOutput = jobDescriptionPdfDownload.DownloadrequirementsInternalUse(Id);

        Response.ContentType = "application/pdf";
        Response.AddHeader("content-disposition", "attachment;filename=JD-Internal-Use-" + result.RequestCode + ".pdf");

        Response.Cache.SetCacheability(HttpCacheability.NoCache);
        CreatePdf(strOutput);
    }

What I have tried:

I have tried to pass the response as parameter but i throws error.

Posted 3-Apr-16 23:21pm

Rakesh Kohale

Updated 5-Apr-16 0:24am

F-ES Sitecore

v2

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Comments

F-ES Sitecore 4-Apr-16 5:49am

What does CreatePdf do? What is its return type?

Rakesh Kohale 4-Apr-16 5:53am

It will create pdf file.

I have tried the same for same controller and its working over there. But When I want to call the same method from another controller then the error comes.

John C Rayan 4-Apr-16 5:56am

What error are you getting? Which line?

Rakesh Kohale 4-Apr-16 6:01am

I am getting Response as null in the second controller where The called function is getting called.

Rakesh Kohale 4-Apr-16 5:58am

I am getting Response as null in the second controller where The called function.

Richard Deeming 4-Apr-16 8:58am

It looks like you're trying to download multiple files with a single request. That's not how HTTP works. You either need one request per file, or you need to combine all of the files into a single container such as a ZIP file.

Rakesh Kohale 5-Apr-16 5:26am

Is there any option available to download all the file into a single container as mentioned by you earlier. Can You please tell me.
Thank You!

Richard Deeming 5-Apr-16 7:54am

Use the ZipArchive class[^] to create the Zip file and add each PDF as an entry, and then use the controller's File method[^] to return the Zip file to the client.

See this SO answer[^] for an example.

2 solutions

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mohittt · Accepted Answer · 2016-04-04T23:51:00

Solution 1

This is because when postback occurs in MVC then the empty page comes so you have to first save your data in TempData and use that TempData in another controller.
Tempdata is used to transfer data from one controller to another.

Posted 4-Apr-16 23:51pm

mohittt

Member 10371658 · Accepted Answer · 2016-04-05T00:24:00

Solution 2

you can use TempData: Something like this

controller1:
TempData["abc"] = "write your message here";
controller2:
if(TempData["abc"] !=null)
{
}

Posted 5-Apr-16 0:24am

Member 10371658