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How to Serve Files to User in Asp.Net MVC

Let the user download a file from server is not a typical task, programmer have to write some lines of code which will execute the task. Asp.Net MVC action with returning type FileResult will complete this task in few task listed in the article.

After uploading file/files on the server, how to deliver/serve a file for user to download and save on an individual system depends on the way of storing the file on the server by programmer. Programmer can provide a simple link to an action including some lines of code to perform the task.

In the controller write below line of c# code in the action named “DownloadFile” which will access the file saved on the root of this project and then prompt user to Open/Save that file.

public FileResult DownloadFile()
{
var file = Server.MapPath("~/download file.txt");
return File(file, "Text", "download file");
}

These two line of code will sufficient to prompt the user, now in view page create an actionline which will redirect the user to this action. The second line of code will creates a System.Web.Mvc.FilePathResult object by using the file name, the content type, and the file download name.

@Html.ActionLink("Download File", "DownloadFile");

Run the project and particular controller/action then click on the link created above. This will show an opening download file window having two option to open or save that file, as shown in the below image:

How to Serve Files to User in Asp.Net MVC

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Memory representation of Linked List

             In memory the linked list is stored in scattered cells (locations).The memory for each node is allocated dynamically means as and when required. So the Linked List can increase as per the user wish and the size is not fixed, it can vary.

               Suppose first node of linked list is allocated with an address 1008. Its graphical representation looks like the figure shown below:


      Suppose next node is allocated at an address 506, so the list becomes,



  Suppose next node is allocated with an address with an address 10,s the list become,


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 In the above representation the data stored in the linked list is “INDIA”, the information part of each node contains one character. The external pointer root points to first node’s address 1005. The link part of the node containing information I contains 1007, the address of next node. The last node …