如何在C#中将字节复制到结构变量中? [英] How do I copy bytes into a struct variable in C#?

问题描述

我有一个struct abc，我想将字节复制到struct变量中.与C/C ++中的memcpy类似. 我在套接字上收到了字节，它们是同一个struct abc变量的字节.

I have a struct abc and I want to copy bytes into a struct variable. Similar to memcpy in C/C++. I receive the bytes over socket and they are the bytes of the same struct abc variable.

[StructLayout(LayoutKind.Sequential, Pack = 1)]    
public struct abc
{ 
         public int a;
         public int b;
         public float c;
         public char[] d; //30 size
}

推荐答案

您可以按如下所示将字节数组转换为您的结构:

You can convert the byte array to your structure as follows :

            int size = Marshal.SizeOf(typeof(abc));
            IntPtr ptr = Marshal.AllocHGlobal(size);

            Marshal.Copy(arr, 0, ptr, size);

            var struct = (abc)Marshal.PtrToStructure(ptr, typeof(abc));
            Marshal.FreeHGlobal(ptr);

struct现在是您转换后的结构.请记住，尽管如此，注释(即字节顺序)

struct is now your converted structure. Bear in mind the comments that have been made about this though (i.e. byte ordering)

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