文章生成器，Split方法截取字符串。从硬盘读取文件，和向硬盘存储文件参考代码

        string x, y;
        private void button2_Click(object sender, EventArgs e)
        {
            textBox2.Clear();

            if (button4.Enabled == false)
            {
                string[] shuzu = y.Split(new char[]{'。'});   //用split方法截取字符串
                string news = "";
                // 将截取字符串后的语句打乱顺序
                for (int i = 0; i < shuzu.Length; i++)
             
                   {
                    if (i % 2 == 0)
                    {
                        news += shuzu[i]+"。";
                    }
                    else
                    {
                        news = shuzu[i]+"," + news;
                    }

                }

                textBox2.Text = news;
            }
            else
            {
                MessageBox.Show("请先将当前模板存入集合");
            }
        }

           //从硬盘读取文件

             DialogResult isok = openFileDialog1.ShowDialog();

             if (isok == DialogResult.OK) //判断是否点击的打开按钮

               {  

                 string filename = openFileDialog1.FileName;//获取文件路径,文件路径存在FileName里    

                 //使用流进行文件读取

                 StreamReader sr = new StreamReader(filename);

                 //构建一个streamreader类的对象sr ,文件路径作为参数    

                 textBox1.Text = sr.ReadToEnd();  

                 //readtoend方法，把文件完全读出        

                  sr.Close();  //流用完一定关闭       

                 }