在中文下打开日文文件：）

private void button1_Click(object sender, System.EventArgs e)

{

openFileDialog1.ShowDialog ();

FileStream fr=new FileStream(openFileDialog1.FileName ,FileMode.OpenOrCreate ,FileAccess.Read);

byte [] filebtye=new byte[fr.Length ];

fr.Read(filebtye,0,Convert.ToInt32 (fr.Length) );

char [] filechar=new char [fr.Length ];

Encoding myencode=Encoding.GetEncoding (932);

myencode.GetChars (filebtye,0,Convert.ToInt32 (fr.Length) ,filechar,0);

string s= new string (filechar);

fr.Close ();

richTextBox1.Text =s;

}