private void button5_Click(object sender, EventArgs e)

        {

            openFileDialog1.ShowDialog(this);



				openFileDialog1.Filter = "LUA文件|*.lua|所有文件|*.*";//设置文件类型;

				openFileDialog1.AutoUpgradeEnabled = true;//是否随系统升级而升级外观;

			if ( openFileDialog1.ShowDialog(this) ==  System.Windows.Forms.DialogResult.OK)

			{

                textBox1.Text = openFileDialog1.FileName;

               Stream read_stream = File.OpenRead(openFileDialog1.FileName);

               

                if (File.Exists(openFileDialog1.FileName))//看看文件是否存在;

                {

                    /*

                    FileStream fs = File.OpenRead(openFileDialog1.FileName);//存在的话旧打开文件;

                    byte[] str = new byte[20000];//定义数组来读取数据;

                    while (fs.Read(str, 0, str.Length) > 0)//开始从文本中读取数据;

                    {

                        Console.WriteLine(System.Text.Encoding.Default.GetString(str));//将读取的数据写出来 到屏幕上;



                        textBox1.Text = System.Text.Encoding.Default.GetString(str);

                    }

                    fs.Close();//关闭文件;