using FileStorage; using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace FileHandlers { public abstract class FwFileHandlerBase : IFwFileHandler { public virtual void DeleteFile(IFileStorage file) { } public virtual Stream GetFileData(IFileStorage file) { return null; } public virtual string Upload( string fileName, long length, string extraInfo, Stream fileData) { return ""; } } }