C#:Hashtable的序列化（保存和读取）

using System.IO;using System.Runtime.Serialization.Formatters.Binary; .... ... Hashtable aa = new Hashtable();private void buttonSave_Click(object sender, EventArgs e) { FileStream fs = new FileStream("e://aa.dat", FileMode.Create); BinaryFormatter bf = new BinaryFormatter(); bf.Serialize(fs, aa); fs.Close(); }private void buttonLoad_Click(object sender, EventArgs e) { aa.Clear(); FileStream fs = new FileStream("e://aa.dat", FileMode.OpenOrCreate); BinaryFormatter bf = new BinaryFormatter(); aa = (Hashtable)bf.Deserialize(fs); fs.Close(); }