The File-based tutorial transfer charts to the client using temporary files. Repeated requests for the same chart use the same file, reducing load on the server. New requests create new files as needed. Files are not cleaned up automatically. This method is indicated when charts are complex (expensive to generate) or when you expect a large number of requests for a relatively small number of different charts. For more information on the File render method, see ImageRenderMethodEnum.File Method.

File-based Rendering Method