C # objects to serialize a plurality of single file

　　Under certain circumstances, you may need to save multiple objects to a file. Internet looking for a while, I did not find specifically say this issue. Bo asked to see a related question and answer, finishing a bit. The following is one of my simple realization:

   // test for saving class 
　　[the 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");
            TESTC TestToSerizable = new new TestToSerizable ( . 3 , " TESTC " );
 
　　　　　　　// save the sequence of a plurality of objects
            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();
　　　　　　　　
　　　　　　　// read the plurality of objects deserializing 
            FS = new new the 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);

        }
    }

 　　operation result:

　　

　　Further, there may be different types of objects you want to save the situation.

 　　

    [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 );

            // objects of different types of cross saved 
            the FileStream FS = new new the 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 ); // basic type may be

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

            // sequentially read during storage 
            FS = new new the 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);
        }
    }

 

　　operation result:

　　

　　

　　The first blog, start a discussion, please predecessors wing.

　　the above

Reproduced in: https: //www.cnblogs.com/zhang-ming/p/3793213.html