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This documentation page describes implementations made in our v17.2 release cycle. To learn about functionality shipping with v18.1, navigate to our updated help file experience at docs.devexpress.com. Learn More

FileDataDownloader Class

Used by the File Attachments module to send files to the client in ASP.NET XAF Applications.

Namespace:DevExpress.ExpressApp.FileAttachments.Web
Assembly:DevExpress.ExpressApp.FileAttachment.Web.v18.1.dll

Expanded Syntax

Expanded Remarks

The FileDataDownloader class is used by the File Attachments module to send files to the client in ASP.NET XAF Applications. To execute custom code when a file is downloaded, inherit the FileDataDownloader class and override the DownloadCore method.

Note

The DownloadCore method writes the file to the response and ends the response. So, place your custom code before the base.DownloadCore method call.

To register your FileDataDownloader descendant, call the static SetDownloader method in the Application_Start method located in the Global.asax.cs (Global.asax.vb) file:

Expanded Inheritance Hierarchy

System.Object
    FileDataDownloader

Expanded See Also

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