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What's the most efficient way to read a stream into another stream? In this case, I'm trying to read data in a Filestream into a generic stream. I know I could do the following:
1. read line by line and write the data to the stream
2. read chunks of bytes and write to the stream
3. etc
I'm just trying to find the most efficient way.
Thanks
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C# StreamReader ReadLineThe ReadLine method reads a line of characters from the current stream and returns the data as a string. It returns null if the end of the input stream is reached. The example reads the whole file line by line by using the ReadLine method. We use a while loop to read all lines.
using var fs = new FileStream(path, FileMode. Open, FileAccess. Read); The FileStream class provides a Stream for a file, supporting both synchronous and asynchronous read and write operations.
You can simply call File. OpenRead to get a FileStream containing the file. If you really want the file to be in a MemoryStream, you can call CopyTo to copy the FileStream to a MemoryStream.
The StreamReader is used for reading string or large sentences from a file. The StreamReader also uses the TextReader class as its base class and then offers methods like Reading and ReadLine to read data from the stream.
Stephen Toub discusses a stream pipeline in his MSDN .NET matters column here. In the article he describes a CopyStream() method that copies from one input stream to another stream. This sounds quite similar to what you're trying to do.
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