. NET Learning notes----2015-06-25 (file stream filestream)

File stream

The process of creating a file stream object is written in the using, which automatically helps us to release the resources occupied by the stream.

            //FileStream of the operation Byte//StreamReader and StreamWriter manipulate characters.FileStream Fsread =NewFileStream (@"C:\Users\Administrator\Desktop\new.txt", FileMode.OpenOrCreate, FileAccess.Read); byte[] buffer =New byte[1024x768*1024x768*5]; //3.8M 5M//returns the number of valid bytes actually read this time            intr = Fsread.read (buffer,0, buffer.            Length); //decodes each element in a byte array into a string in the specified encoding format            strings = Encoding.UTF8.GetString (buffer,0, R); //Close the streamFsread.close (); //releasing resources occupied by a streamFsread.dispose ();            Console.WriteLine (s);            Console.readkey (); //using FileStream to write data//using (FileStream fswrite = new FileStream (@ "C:\Users\Administrator\Desktop\new.txt", FileMode.OpenOrCreate, FileAccess.Write))//{            //string str = "See if I have the wood to cover you out"; //byte[] buffer = Encoding.UTF8.GetBytes (str); //fswrite.write (buffer, 0, buffer.)            Length); //}            //Console.WriteLine ("OK"); //Console.readkey ();

Using file streams for multimedia file replication

Ideas:

Read the multimedia file you want to copy, and then write it to the location you specified.

usingSystem;usingSystem.Collections.Generic;usingSystem.IO;usingSystem.Linq;usingSystem.Text;usingSystem.Threading.Tasks;namespace_08_ using a file stream to replicate a multimedia file {classProgram {Static voidMain (string[] args) {            stringSource =@"D:\Csharp Tutorial \09-read-write files for object-oriented polymorphic \2, file classes. avi"; stringtarget =@"C:\Users\Administrator\Desktop\File. avi for Class";            CopyFile (source, target); Console.WriteLine ("Replication succeeded");        Console.readkey (); }         Public Static voidCopyFile (stringSoucre,stringtarget) {            //1. Create a stream responsible for reading the file            using(FileStream fsread =NewFileStream (Soucre, FileMode.Open, FileAccess.Read)) {                //2. Create a stream responsible for writing                using(FileStream fswrite =NewFileStream (Target, FileMode.OpenOrCreate, FileAccess.Write)) {                    byte[] buffer =New byte[1024x768*1024x768*5]; //because the file may be larger, it is read by looping through the                     while(true)                    {                        //returns the number of bytes actually read from this read                        intr = Fsread.read (buffer,0, buffer.                        Length); //If you return a 0, it means that nothing has been read.                        if(r = =0)                        {                             Break; } fswrite.write (Buffer,0, R); }                }            }        }    }}

. NET Learning notes----2015-06-25 (file stream filestream)