C#序列化多個對象到單個文件

  特定的狀況下,可能須要將多個對象保存到文件中。在網上找了一陣,沒發現專門說這個問題的。在博問看到了一個相關的問題和回答,整理了一下。如下是個人一個簡單實現:測試

   //測試用於保存的類 
  [Serializable]
class TestToSerizable { public int i; public string b; public TestToSerizable(int i, string b) { this.i = i; this.b = b; } } class Program { static void Main(string[] args) { TestToSerizable testa = new TestToSerizable(1, "testa"); TestToSerizable testb = new TestToSerizable(2, "testb"); TestToSerizable testc = new TestToSerizable(3, "testc");
       //序列化保存多個對象 FileStream fs
= new FileStream("DataFile.dat", FileMode.OpenOrCreate); BinaryFormatter formatter = new BinaryFormatter(); formatter.Serialize(fs, testa); formatter.Serialize(fs, testb); formatter.Serialize(fs, testc); fs.Flush(); fs.Close();         
       //逆序列化讀取多個對象
fs = new FileStream("DataFile.dat", FileMode.Open); formatter = new BinaryFormatter(); TestToSerizable a = (TestToSerizable)formatter.Deserialize(fs); TestToSerizable b = (TestToSerizable)formatter.Deserialize(fs); TestToSerizable c = (TestToSerizable)formatter.Deserialize(fs); fs.Close();

 Console.WriteLine("a.i=" + a.i + " a.b=" + a.b);
 Console.WriteLine("b.i=" + b.i + " b.b=" + b.b);
 Console.WriteLine("c.i=" + c.i + " c.b=" + c.b);this

        }
    }

   運行結果:spa

  

  進一步,可能會有要保存不一樣類對象的狀況。code

   

    [Serializable]
    class TestToSerizableA
    {
        public int i;
        public string b;
        public TestToSerizableA(int i, string b)
        {
            this.i = i;
            this.b = b;
        }
    }
    [Serializable]
    class TestToSerizableB
    {
        public bool a;
        public float b;
        public TestToSerizableB(bool a, float b)
        {
            this.a = a;
            this.b = b;
        }
    }
    class Program
    {

        static void Main(string[] args)
        {
            TestToSerizableA testa = new TestToSerizableA(1, "testa");
            TestToSerizableB testb = new TestToSerizableB(false, 1.23f);
            TestToSerizableA testc = new TestToSerizableA(3, "testc");
            TestToSerizableB testd = new TestToSerizableB(true, 3.14f);

            //交叉保存的不一樣類型的對象
            FileStream fs = new FileStream("DataFile.dat", FileMode.OpenOrCreate);
            BinaryFormatter formatter = new BinaryFormatter();
            formatter.Serialize(fs, testa);
            formatter.Serialize(fs, testb);
            formatter.Serialize(fs, testc);
            formatter.Serialize(fs, testd);
            formatter.Serialize(fs, 1);//基礎類型也能夠

            fs.Flush();
            fs.Close();

            //按保存時的順序讀取
            fs = new FileStream("DataFile.dat", FileMode.Open);
            formatter = new BinaryFormatter();
            TestToSerizableA a = (TestToSerizableA)formatter.Deserialize(fs);
            TestToSerizableB b = (TestToSerizableB)formatter.Deserialize(fs);
            TestToSerizableA c = (TestToSerizableA)formatter.Deserialize(fs);
            TestToSerizableB d = (TestToSerizableB)formatter.Deserialize(fs);
            int i = (int)formatter.Deserialize(fs);

            fs.Close();
            Console.WriteLine("a.i=" + a.i + " a.b=" + a.b);
            Console.WriteLine("b.i=" + b.a + " b.b=" + b.b);
            Console.WriteLine("c.i=" + c.i + " c.b=" + c.b);
            Console.WriteLine("d.i=" + d.a + " d.b=" + d.b);
            Console.WriteLine("i=" + i);
}
}

 

  運行結果:orm

  

  

  第一次寫博客,拋磚引玉,請各位前輩不吝賜教。對象

  以上blog

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