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FileManagerSettings.RootFolder Property

Gets or sets the root folder.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v22.1.dll


public virtual string RootFolder { get; set; }

Property Value

Type Default Description
String String.Empty

The path to the root folder.

Property Paths

You can access this nested property as listed below:


This property is a wrapper of the FileSystemProviderBase.RootFolder property. Refer to its description for more information.


  • We recommend you to specify the RootFolder property on Page_Init event.
  • If you change the RootFolder property value dynamically, it can result in the wrong thumbnails for files with coincident file names. In this case, specify a thumbnail folder (the FileManagerSettings.ThumbnailFolder) dynamically. To learn more, see the Security Considerations topic.
  • The root folder cannot be changed during its own callbacks. Instead, use postbacks or the ASPxCallbackPanel‘s callbacks.


FileManager - RootFolder Property

Web Forms (in markup):

<dx:ASPxFileManager ID="fileManager" runat="server" ...>
    <Settings RootFolder="~/Content/FileManager/Files" ThumbnailFolder="~/Content/FileManager/Thumbnails" 
    AllowedFileExtensions=".jpg, .jpeg, .gif, .png" InitialFolder="~/Content/FileManager/Images"/>

Web Forms (in code):

ASPxFileManager fm = new ASPxFileManager();
fm.ID = "ASPxFileManager1";
fm.SettingsUpload.ValidationSettings.DisableHttpHandlerValidation = true;
fm.Settings.RootFolder = Url.Content("~/Content/FileManager/Files");
fm.Settings.ThumbnailFolder = Url.Content("~/Content/FileManager/Thumbnails");
fm.Settings.InitialFolder = Url.Content("~/Content/FileManager/Images");
fm.Settings.AllowedFileExtensions=new String[] { ".jpeg", ".jpg", ".gif", ".png" };


@Html.DevExpress().FileManager( settings => {
    settings.Name = "fileManager";

    settings.Settings.ThumbnailFolder = Url.Content("~/Content/FileManager/Thumbnails");
    settings.Settings.RootFolder = Url.Content("~/Content/FileManager/Files");
    settings.Settings.InitialFolder = "~/Content/FileManager/Images";
    settings.Settings.AllowedFileExtensions= new String[] { ".jpeg", ".jpg", ".gif", ".png" };

Online Demo

See Also