C#中文件操作主要可以使用StreamReader和StreamWriter两个类
string infname = "CopyFileAddLineNumber.cs";
string outfname = "CopyFileAddLineNumber.txt";
if( args.Length >= 1 ) infname = args[0];
if( args.Length >= 2 ) outfname = args[1];
try
{
FileStream fin = new FileStream(
infname, FileMode.Open, FileAccess.Read );
FileStream fout = new FileStream(
outfname, FileMode.Create, FileAccess.Write );
StreamReader brin = new StreamReader(
fin, System.Text.Encoding.Default );
StreamWriter brout = new StreamWriter(
fout, System.Text.Encoding.Default );
int cnt = 0; // 行号
string s = brin.ReadLine();
while ( s != null )
{
cnt ++;
s = deleteComments(s); //去掉以//开始的注释
brout.WriteLine(cnt + ": \t" + s ); //写出
Console.WriteLine(cnt + ": \t" + s ); //在控制上显示
s = brin.ReadLine(); //读入
}
brin.Close(); // 关闭缓冲读入流及文件读入流的连接.
brout.Close();
}
catch (FileNotFoundException)
{
Console.WriteLine("File not found!" );
}
catch (IOException e2)
{
Console.WriteLine( e2 );
}
