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File Manager

Physical File System


The FileManager widget can work with a file system located on the server. To connect the widget with the file system items, assign the Remote File System Provider to the fileSystemProvider option. Pass the endpointUrl to the remote file system provider object to specify the Url at which the widget can access the file system items.

Configure the built-in server-side helper methods to process the FileManager widget's AJAX requests on the ASP.NET MVC and ASP.NET Core back-end:

  1. Create an instance of the FileSystemConfiguration class to create a file system provider and configure its interaction with file system items.
  2. Use the FileSystemProvider property to specify a file system provider. For a physical file system, configure a file system provider of the PhysicalFileSystemProvider type.
  3. Use the FileSystemCommandProcessor class to process commands and request parameters that the widget passes to the file system.

This demo contains commented out code lines that enable file modification operations. You can uncomment them and configure if necessary.

@(Html.DevExtreme().FileManager() .FileSystemProvider(provider => provider.Remote() .Url(Url.HttpRouteUrl("FileManagementScriptsApi", null))) .Permissions(permissions => { permissions.Download(true); // uncomment the code below to enable file/folder management // permissions.Create(true); // permissions.Copy(true); // permissions.Move(true); // permissions.Delete(true); // permissions.Rename(true); // permissions.Upload(true); }) .AllowedFileExtensions(new[] { ".js", ".json", ".css" }))
using DevExtreme.MVC.Demos.Models.FileManagement; using System.Web.Mvc; namespace DevExtreme.MVC.Demos.Controllers { public class FileManagerController : Controller { public ActionResult BindingToFileSystem() { return View(); } } }
using DevExtreme.AspNet.Mvc.FileManagement; using System; using System.Net.Http; using System.Web; using System.Web.Http; using System.Web.Mvc; using System.Net.Http.Headers; namespace DevExtreme.MVC.Demos.Controllers.ApiControllers { public class FileManagerScriptsApiController : ApiController { HttpContext CurrentContext = HttpContext.Current; string TempDirectoryPath { get { return CurrentContext.Server.MapPath("~/App_Data/UploadTemp"); } } [System.Web.Http.AcceptVerbs("GET", "POST")] [System.Web.Http.Route("api/file-manager-file-system-scripts", Name = "FileManagementScriptsApi")] public HttpResponseMessage FileSystem() { FileSystemCommand command; Enum.TryParse(CurrentContext.Request["command"], out command); string arguments = CurrentContext.Request["arguments"]; var config = new FileSystemConfiguration { Request = new HttpContextWrapper(CurrentContext).Request, FileSystemProvider = new PhysicalFileSystemProvider(CurrentContext.Server.MapPath("~/Scripts")), //uncomment the code below to enable file/folder management //AllowCopy = true, //AllowCreate = true, //AllowMove = true, //AllowDelete = true, //AllowRename = true, //AllowUpload = true, AllowDownload = true, AllowedFileExtensions = new[] { ".js", ".json", ".css" }, TempDirectory = TempDirectoryPath }; var processor = new FileSystemCommandProcessor(config); var commandResult = processor.Execute(command, arguments); var result = commandResult.GetClientCommandResult(); return command == FileSystemCommand.Download && commandResult.Success ? CreateDownloadResponse(result) : Request.CreateResponse(result); } HttpResponseMessage CreateDownloadResponse(object result) { var fileContent = result as FileStreamResult; if(fileContent == null) return Request.CreateResponse(result); var response = new HttpResponseMessage() { Content = new StreamContent(fileContent.FileStream) }; response.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment") { FileName = fileContent.FileDownloadName }; response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream"); return response; } } }