C#的几种文件操作方法

using (FileStream fs = File.OpenWrite(@"d:\workusing (FileStream fs = File.OpenWrite(@"d:\work\1.txt")) {

    byte[] toBytes = Encoding.UTF8.GetBytes("11111111");
    fs.Write(toBytes, 0, toBytes.Length);
}
using (FileStream fs = File.Create(@"d:\work\1.txt")) {
    byte[] toBytes = Encoding.UTF8.GetBytes("11111111");
    fs.Write(toBytes, 0, toBytes.Length);
}
File.WriteAllBytes(@"d:\work\1.txt", Encoding.UTF8.GetBytes("11111111"));
using (StreamWriter sw = File.CreateText(@"d:\work\1.txt")) {
    sw.Write("11111111");
}
File.WriteAllText(@"d:\work\1.txt", "11111111");
byte[] buff = new byte[1024]; //假设文件不超过1KB
using(FileStream fs = File.OpenRead(@"d:\work\1.txt")) {
    int len = fs.Read(buff, 0, 1024);
    string content = Encoding.UTF8.GetString(buff, 0, len);
    Console.WriteLine(content);
}
using (StreamReader sr = File.OpenText(@"d:\work\1.txt")) {
    string content = sr.ReadToEnd();
    Console.WriteLine(content);
}
string content = File.ReadAllText(@"d:\work\1.txt");
using (FileStream fs = File.Open(@"d:\work\1.txt", FileMode.Append, FileAccess.Write)) {
    byte[] toWrite = Encoding.UTF8.GetBytes("123123\r\n");
    fs.Write(toWrite, 0, toWrite.Length);
}
using (StreamWriter sw = File.AppendText(@"d:\work\1.txt")) {
    sw.Write("123123\r\n");
    sw.WriteLine("123123"); //与上面语句等价
}
.txtd:\workusing (FileStream fs = File.OpenWrite(@"d:\work\1.txt")) {

    byte[] toBytes = Encoding.UTF8.GetBytes("11111111");
    fs.Write(toBytes, 0, toBytes.Length);
}
using (FileStream fs = File.Create(@"d:\work\1.txt")) {
    byte[] toBytes = Encoding.UTF8.GetBytes("11111111");
    fs.Write(toBytes, 0, toBytes.Length);
}
File.WriteAllBytes(@"d:\work\1.txt", Encoding.UTF8.GetBytes("11111111"));
using (StreamWriter sw = File.CreateText(@"d:\work\1.txt")) {
    sw.Write("11111111");
}
File.WriteAllText(@"d:\work\1.txt", "11111111");
byte[] buff = new byte[1024]; //假设文件不超过1KB
using(FileStream fs = File.OpenRead(@"d:\work\1.txt")) {
    int len = fs.Read(buff, 0, 1024);
    string content = Encoding.UTF8.GetString(buff, 0, len);
    Console.WriteLine(content);
}
using (StreamReader sr = File.OpenText(@"d:\work\1.txt")) {
    string content = sr.ReadToEnd();
    Console.WriteLine(content);
}
string content = File.ReadAllText(@"d:\work\1.txt");
using (FileStream fs = File.Open(@"d:\work\1.txt", FileMode.Append, FileAccess.Write)) {
    byte[] toWrite = Encoding.UTF8.GetBytes("123123\r\n");
    fs.Write(toWrite, 0, toWrite.Length);
}
using (StreamWriter sw = File.AppendText(@"d:\work\1.txt")) {
    sw.Write("123123\r\n");
    sw.WriteLine("123123"); //与上面语句等价
}
.