How to download mvc 2 android

One other change that could easily be accommodated if required is to pass the MIME Type of the file as a third parameter so that the one Controller action could correctly serve a variety of output file formats. This removes any need for any physical files to created and stored on the server, so no housekeeping routines required and once again this is seamless to the end user.

Note, the advantage of using TempData rather than Session is that once TempData is read the data is cleared so it will be more efficient in terms of memory usage if you have a high volume of file requests. See TempData Best Practice. Once the file has been created on the server pass back the path to the file or just the filename as the return value to your AJAX call and then set the JavaScript window.

From the end users perspective, the file download operation is seamless as they never leave the page on which the request originates. My 2 cents - you don't need to store the excel as a physical file on the server - instead, store it in the Session Cache. Use a uniquely generated name for your Cache variable that stores that excel file - this will be the return of your initial ajax call.

This way you don't have to deal with file access issues, managing deleting the files when not needed, etc.

Spreadsheet to generate the Excel file and it has a Save to Stream option. That being said, there are a number of ways to create Excel files that can easily be written to a memory stream. In IE, Chrome, and Firefox, the browser prompts to download the file and no actual navigation occurs. I used the solution posted by CSL but I would recommend you dont store the file data in Session during the whole session. By using TempData the file data is automatically removed after the next request which is the GET request for the file.

You could also manage removal of the file data in Session in download action. The accepted answer didn't quite work for me as I got a Bad Gateway result from the ajax call even though everything seemed to be returning fine from the controller.

Perhaps I was hitting a limit with TempData - not sure, but I found that if I used IMemoryCache instead of TempData , it worked fine, so here is my adapted version of the code in the accepted answer:. This thread helped me create my own solution that I will share here. The javascript uses JQuery file download plugin and consists of 2 succeeding calls. CSL's answer was implemented in a project I'm working on but the problem I incurred was scaling out on Azure broke our file downloads.

I may sound quite naive, and may attract quite a criticism, but here's how I did it, It doesn't involve ajax for export, but it doesn't do a full postback either.

Thanks for this post and this answer. Create a simple controller. The whole point of the trick seems that, we are posting a form a part of the Razor View upon which we are calling an Action method , which returns: a FileResult , and this FileResult returns the Excel File.. And for posting the filter values, as said, and if you require to , I am making a post request to another action, as has been attempted to describe..

I am using Asp. Net WebForm and just I wanna to download a file from server side. There is a lot article but I cannot find just basic answer. Now, I tried a basic way and got it. I have to create a lot of input button dynamically on runtime.

And I want to add each button to download button with giving an unique fileNumber. And I am going to delete this old files with another program. But if there is a way to just sending byte array to download file like using Response. I wanna to use it. Button import android. ImageButton import android. Toast import androidx. Skip to content. Change Language. Related Articles.

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Interview Questions. Company Questions. Artificial Intelligence. Cloud Computing. Really appreciate it. My question is on Spring itself really and its enthusiasm for adding a plethora of additional dependencies that potentially clogs up the project over time. This is not critique to you, just a question. There has been a lot of changes in Spring, if you are using latest versions then you can remove many of the logging related dependencies. You can always run mvn dependency:tree to find transitive dependencies or unused dependencies and remove them from pom.

This will keep your pom. How to use Autowired service in handler…. If i am using then null pointer exception will occur. It is nothing but creating object. I will write autowired as. Problem : I am calling spring controller using curl request. As Input I am passing a json with request to controller. Could you please post your curl command? The presence of so many logging dependencies and exclusions is amazing.

Even such a tiny app. Surely that was not what logging was meant to be. But this is what is wrong with open source in general. This smells like open source hater to me. You can actually clean them up and just use what you need, I am bit lazy to do that for my example code. Hi, when I am getting the parameter value from request, its a null value.

Please provide some code snippet, what is your HTTP method? How you are passing request parameters? Your email address will not be published.