文件写入.txt

C#做的加密解密的东西

private void button1_Click(object sender, System.EventArgs e)
   {
	using (StreamWriter sw = new StreamWriter("md5.txt")) 
		{
			// Add some text to the file.
			sw.Write("This is the ");
			sw.WriteLine("header for the file.");
			sw.WriteLine("-------------------");
			// Arbitrary objects can also be written to the file.
			sw.Write("The date is: ");
			sw.WriteLine(DateTime.Now);

		}
  }