从dat文件中读取字典

时间:2014-08-28 09:46:26

标签: c# file dictionary filestream binaryreader

我将Dictionary写入dat文件,我的词典看起来像:

Dictionary<string, Dictionary<string,string>>

现在我的问题是从文件中读取字典,我试图使用BinaryReader和StreamReader但我的字典仍然是空的。

我的写代码:

static void WriteToFile(Dictionary<string, Dictionary<string, string>> dic)

            FileStream fs = new FileStream(FILE_NAME, FileMode.OpenOrCreate);
            StreamWriter w = new StreamWriter(fs);
          BinaryFormatter bw = new BinaryFormatter();
        bw.Serialize(fs,dic);
            w.Write(dic);

我的阅读代码:

FileStream fs = newFileStream(FILE_NAME , FileMode.OpenOrCreate);
streamReader r = new StreamReader(fs);
Dictionary<string, Dictionary<string,string>> main = r.read();

有人知道我该怎么办?

1 个答案:

答案 0 :(得分:2)

首先,您需要执行阅读r.read()。然后 - 反序列化readed结构。

请注意,最好将IDisposable个对象放入using语句中。

    static Dictionary<string, Dictionary<string, string>> ReadFromFile()
    {
        using (var fs = new FileStream("C:/test.dat", FileMode.Open))
        {
                var bw = new BinaryFormatter();
                return (Dictionary<string, Dictionary<string, string>>)bw.Deserialize(fs);
        }
    }

    static void WriteToFile(Dictionary<string, Dictionary<string, string>> dic)
    {
        using (var fs= new FileStream("C:/test.dat", FileMode.OpenOrCreate))
        {
            using (var w = new StreamWriter(fs))
            {
                var bw = new BinaryFormatter();
                bw.Serialize(fs, dic);
                w.Write(dic);
            }
        }
    }