Mvc download file using form data

IsValid properties ensure that all the data filled in a control was in a correct format and validated. The UpdateModel class binds control data to models property. But there is a catch. As you know that there can not be two methods in a class with same name and same parameter types. As there are already a [HttpGet] Create method without parameter, so you cannot declare [HttpPost] Create method without parameter.

Then decorate both method with correct action name as follows:. In this article, I have shown you 4 different ways to retrieve form value in controller class. It is very necessary to know how to collect form data in a class for each MVC Programmer or learner. Hope, your doubt would be cleared. Toggle navigation. C Articles. This article used dapper ORM to interact with the database.

Thus, you need to install dapper ORM into the Application. Since this is a demo, it might not be using the proper standards. Thus, improve it, depending on your skills. Follow on Twitter. Share to your friends. Post a Comment. Once the Entity Framework is configured and connected to the database table, the Model will look as shown below.

You will need to import the following namespace. The Controller consists of three Action methods. Action method for handling GET operation. Inside this Action method, all the files are fetched using Entity Framework and are returned to the View. This Action method gets called when a File is selected and the Upload Button is clicked, and it gets the uploaded file in the HttpPostedFileBase parameter.

The uploaded file is converted to an Array of Bytes using BinaryReader class and finally is inserted into the database table. Finally the File is downloaded using the File function.

ToList ;. ReadBytes postedFile. ContentLength ;. Add new tblFile. GetFileName postedFile. FileName ,. NET, covering C 6. NET Core, with chapters on the latest. NET Core 3. NET Standard and C 8. Use these concepts to deepen your existing knowledge of C and. NET, to have a solid grasp of the latest in C and. NET OR to crack your next. NET Interview. Download Files in ASP. Views: The entire source code of this article can be downloaded from GitHub This article has been editorially reviewed by Suprotim Agarwal.

Was this article worth reading? Share it with fellow developers too. Follow him on twitter maheshdotnet or connect with him on LinkedIn. Feedback - Leave us some adulation, criticism and everything in between! Comment posted by mathew on Tuesday, June 12, AM How can i add multiple files to a single zip file and permits the users to download this zip file? Comment posted by Doctor Benigno on Monday, June 18, AM seems there is a problem in step 5 the view croaks with a CS error , the expression tree cannot contain a dinamic operation.

Seems that the use of the Html. DisplayFor helper needs something more to run smoothly. If i comment out the uses of the helper , the example runs just fine. FileId and Html. FileName need to be tweaked into something else. Comment posted by meganathan subramani on Saturday, June 23, AM Hi, I can upload more than 5MB size files, but i can't able to download that files.

Give me the solution. Comment posted by a on Tuesday, July 3, AM a. I had been trying to adjust the router to enable downloads of zip files but your method makes a lot more sense. I appreciate the help.