c#中对文件的操作小结

     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");
     }
    }