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();
    }
}

 

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 " );
    }
}

3、追加操作