Net download binary file writer

You must not use Stream Reader for binary files (like gifs or jpgs). Stream Reader is for text data. You will almost certainly lose data if you use it for arbitrary binary data. ( If you use Encoding. Get Encoding(28591) you will probably be okay, but what's the point?) Why do you need to use a Stream Reader at all? Why not just keep the binary data as binary data and write it back to disk (or SQL) as binary data? EDIT: As this seems to be something people want to see. if you do just want to copy one stream to another (e.g. to a file) use something like this: /

/ Copies the contents of input to output. Doesn't close either stream. /

public static void Copy Stream( Stream input, Stream output) byte[] buffer = new byte[8 * 1024]; int len; while ( (len = input. Read(buffer, 0, buffer. Length) > 0) output. Write(buffer, 0, len To use it to dump a stream to a file, for example: using ( Stream file = File. Create(filename) Copy Stream(input, file.
In this sample chapter, Lars Powers and Mike Snell focus on the. NET namespaces related to directories, files, and synchronous and asynchronous reading from and writing to data streams. This sample chapter is excerpted from Visual Basic Programmer's Guide to the. NET Framework Class Library, by Lars Powers and Mike Snell. This chapter is from the book  IN THIS CHAPTER Key Classes Related to File I/ O Directory and File Operations Reading and Writing to Files and Streams Learning By Example: Adding Open and Save to Font Pad One of the most important issues any programmer faces is how to go about storing and retrieving information on disk. This issue can be surprisingly complex. The. NET Base Class Library provides a number of classes that simplify the issue somewhat. The library is a substantial improvement over the file-related operations Visual Basic programmers had available to them previously. This chapter focuses on the. NET namespaces related to directories, files, and synchronous and asynchronous reading from and writing to data streams. First, an overview is presented that details the key classes within the namespace. Then we get into files, streams, and data types. And finally, we write a file-monitoring application that demonstrates the use of these classes. After reading this chapter, you should be able to do the following: Manage directories and files including creating, deleting, and accessing their property information Monitor the file system and respond to basic system events Read and write files as streams of data both synchronously and asynchronously Access file data at the binary level Understand some of the basic design considerations for choosing a file I/ O strategy Every application, image, database, message, and document is stored as some form of a file. Directories and files are the warehouses and boxes of our applications. All our applications.