C＃使用非托管数据序列化类

Question

I am currently modifying my code so I could serialize it using the built-in .NET Binary serializer. However a problem occured with one of the class`s fields - a pointer to struct, which is in the unmanaged memory (created via p/invoke). It appears that .NET just remembers the pointer value while serializing, rather than the values, and when I deserialize the class the Matrix property has always random data. Below you could find a sample of my code:

[Serializable]
public unsafe class FrequencyMatrixBuilder
{
    public SparseMatrix* Matrix { get; private set; }
    ....
}

[Serializable]
[StructLayout(LayoutKind.Sequential)]
public unsafe struct SparseMatrix
{
    public int rows;
    public int cols;
    public int vals;
    public int* pointr;
    public int* rowind; 
    public double* value;
};

Any suggestions how can I resolve this problem? Thanks in advance.

Answer 1

Have your class implement the ISerializable interface and handle the serialization manually as you see fit. And don't forget to add the appropriate constructors for deserialization.

Answer 2

看一下序列化代理 ：当您无法或不想将序列化逻辑与类的业务逻辑（在您的情况下为SparceMatrix）混合时，它们提供了一种实现ISerializable的好选择。