C#哈希表数据与文本数据转换

来源：互联网发布：七天网络查分怎么注册编辑：程序博客网时间：2024/05/02 11:24

public Hashtable txt2hash(FileInfo file)
    {
        StreamReader sr = new StreamReader(file.FullName, Encoding.UTF8);
        Hashtable ht = new Hashtable();
        int k = 0;
        string nextline = sr.ReadLine();
        while (nextline != null)
        {

            k = nextline.IndexOf("&", 0);//&是键和值的分隔符
            string key1 = nextline.Substring(0, k).ToString();
            string value1 = nextline.Substring(k + 1, nextline.Length - k - 1).ToString();
            if (!ht.Contains(key1))
            {
                ht.Add(key1, value1);


            }
            nextline = sr.ReadLine();

        }

sr.Close();
return ht;

//IDictionaryEnumerator de = ht.GetEnumerator();//测试输出
   //     while (de.MoveNext())
     //   {
   //         Response.Write(de.Key.ToString()+de.Value.ToString()+"<br>");
  //      }

}

public void hash2txt(Hashtable ht)
{
Random r = new Random();//随机产生文件名保存成txt文件

        string name = r.Next(1000).ToString();
        FileInfo myfile = new FileInfo(Server.MapPath("~/index/" + name + ".txt"));
        StreamWriter sw = myfile.CreateText();

        IDictionaryEnumerator de = ht.GetEnumerator();
        while (de.MoveNext())
        {
            sw.WriteLine(de.Key.ToString() + "&" + de.Value.ToString());

        }
        sw.Close();
    }