完整读写txt 并提取{}里的内容

using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace WebApplication1
{
    public partial class WebForm2 : System.Web.UI.Page
    {
        //txt路径
        static string Path = "C:\\wb2.txt";
        static string path = "E:\\jrf\\文本2.txt";
        protected void Page_Load(object sender, EventArgs e)
        {
            ReadTxtContent(Path);
            Write(path);
        }
        /// <summary>
        /// 读取txt内容 
        /// </summary>
        /// <param name="Path">文件地址</param>
        public string ReadTxtContent(string Path)
        {
            StreamReader sr = new StreamReader(Path, Encoding.Default);
            string content;  
            string f="";
            while ((content = sr.ReadLine()) != null)//按行输出
            {
                f+=content;                 
            }
            //截取{}的内容 再写入txt文件
            var array = f.Split('{');
            f = "";
            foreach (var x in array)
            {
                if (x.Contains("}"))
                {
                    string[] n = x.Split('}');                   
                    f += "{" + n[0] + "}" + "\r\n";
                }
            }
            return f; 
        }
        /// <summary>
        /// 获取ReadTxtContent返回的内容写入.txt
        /// </summary>
        /// <param name="path"></param>
        public void Write(string path)
        {
            //FileMode.Append为不覆盖文件效果.create为覆盖
            FileStream fs = new FileStream(path, mode: FileMode.Append);
            StreamWriter sw = new StreamWriter(fs);
            //开始写入

            sw.Write(ReadTxtContent(Path));
            //清空缓冲区
            sw.Flush();
            //关闭
            sw.Close();
            fs.Close();
        }
    }
}