c#中对文件的操作

1、建立一个文本文件

public class FileClass

{

public static void Main()

{

WriteToFile();

}

static void WriteToFile()

{

StreamWriter SW;

SW=File.CreateText("c:\MyTextFile.txt");

SW.WriteLine("God is greatest of them all");

SW.WriteLine("This is second line");

SW.Close();

Console.WriteLine("File Created SucacessFully");

}

}

2、读文件

public class FileClass

{

public static void Main()

{

ReadFromFile("c:\MyTextFile.txt");

}

static void ReadFromFile(string filename)

{

StreamReader SR;

string S;

SR=File.OpenText(filename);

S=SR.ReadLine();

while(S!=null)

{

Console.WriteLine(S);

S=SR.ReadLine();

}

SR.Close();

}

}

3、追加操作

public class FileClass

{

public static void Main()

{

AppendToFile();

}

static void AppendToFile()

{

StreamWriter SW;

SW=File.AppendText("C:\MyTextFile.txt");

SW.WriteLine("This Line Is Appended");

SW.Close();

Console.WriteLine("Text Appended Successfully");

}

}