Upload and Download Files from Folder and Path in Database using Web API in ASP.Net MVC

Here Mudassar Ahmed Khan has explained with an example, how to upload (insert) and download (retrieve) Files from Folder (Directory) and Path in Database using Web API in ASP.Net MVC Razor. The Web API will insert the File information into SQL Server database using Entity Framework while the actual File will be saved in Folder (Directory) in ASP.Net MVC Razor. The Web API will be called using jQuery AJAX and the file will be uploaded to Database using HTML5 Form Data and XmlHttpRequest (XHR).