create file and save to it using memorystream

Question

How can i create a file and write to it using the memory stream? I need to use the memorystream to prevent other threads from trying to access the file.

The data i'm trying to save to a file is html.

How can this be done?

Answer 1

(Presuming you mean how to copy a file's content to a memory stream)

If you are using framework 4:

var memoryStream = new MemoryStream();

using var fileStream = new FileStream(FilePath, FileMode.Open, FileAccess.Read);
fileStream.CopyTo(memoryStream);