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ASPxFileManager.CustomThumbnail Event

Occurs each time before a thumbnail or a folder’s icon is created.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v22.2.dll

NuGet Package: DevExpress.Web


public event FileManagerThumbnailCreateEventHandler CustomThumbnail

Event Data

The CustomThumbnail event's data class is FileManagerThumbnailCreateEventArgs. The following properties provide information specific to this event:

Property Description
File Obsolete. Gets a file related to the event.
IsParentFolder Gets a value specifying whether the currently processed item is a parent folder.
Item Gets an item related to the event.
ThumbnailImage Gets the settings of a thumbnail image.


The CustomThumbnail event enables you to provide a custom thumbnail. Within the event’s handler, the currently processed item can be accessed by using the FileManagerThumbnailCreateEventArgs.Item property. If the parent folder is processed, the FileManagerThumbnailCreateEventArgs.IsParentFolder property returns true. To specify a custom thumbnail for the processed item, use the FileManagerThumbnailCreateEventArgs.ThumbnailImage property.




<dx:ASPxFileManager ID="fileManager" runat="server" OnCustomThumbnail="fileManager_CustomThumbnail">

Online Demo

ASPxFileManager - Custom Thumbnail

See Also