C#博客随笔之五：文件格式化输出

private void button1_Click(object sender, EventArgs e)
        {
            //读取文件的对话框
            OpenFileDialog fileDialog = new OpenFileDialog();
            if (fileDialog.ShowDialog() == DialogResult.OK)
            {
                //如果点击确定的话，将文件完整路径存放于textBox1中
                textBox1.Text = fileDialog.FileName;
            }
        }

        private string str = "";
        private void button3_Click(object sender, EventArgs e)
        {
            //将内容全部从文件中读取出来
            using (FileStream fs = new FileStream(textBox1.Text, FileMode.Open, FileAccess.Read,FileShare.None))
            {
                StreamReader sr = new StreamReader(fs);
                str = sr.ReadToEnd();
            }
            //对数据进行处理
            var res = str.Replace(fromText.Text, toText.Text);
            StreamWriter sw = new StreamWriter(textBox2.Text+"/res.txt", false);
            //然后将数据写入到目标位置
            sw.Write(res);
            sw.Close();

        }

        private void button2_Click(object sender, EventArgs e)
        {
            //选择文件夹对话框，用来选择文件保存的位置
            FolderBrowserDialog fbd = new FolderBrowserDialog();

            if (fbd.ShowDialog() == DialogResult.OK)
            {
                textBox2.Text = fbd.SelectedPath;
            }
        }