IUriStreamService Interface
Defines a service which is called to retrieve data from the URI specified in some types of document fields.
Namespace: DevExpress.Office.Services
Assembly: DevExpress.Office.v18.2.Core.dll
Declaration
Remarks
When a field is updated, the IUriStreamService.GetStream method is called. This method calls the IUriStreamProvider.GetStream methods of registered providers to obtain a stream of image data. Subsequent calls are made until a successful result is obtained. The order of calls is the order in which providers have been registered. By default, there is only one provider - the WebUriStreamProvider that enables you to load an image from the specified URI by performing a web request.
Example
This example demonstrates how to use the IUriStreamService.RegisterProvider method to register a custom data stream provider implementing the IUriStreamProvider interface and make it available to clients of the IUriStreamService service.
Note
A complete sample project is available at https://github.com/DevExpress-Examples/how-to-use-images-when-implementing-the-mail-merge-functionality-e4164
private void RegisterUriStreamService(RichEditControl richEditControl) {
IUriStreamService uriStreamService = richEditControl.GetService<IUriStreamService>();
uriStreamService.RegisterProvider(new ImageStreamProvider(NorthwindDataProvider.Categories, "Picture"));
}