Serializing a 2D array

Questions & Answers
1

I realize this question has been asked in the past but it has been at least 2 years and I’m praying that another solution has been found.

I have a game that is similar to chess and I’m wanting to make a Save Game option. The problem is the unit locations are saved in a Unit[,].

Is it true that the only way around this is to flatten the array or is there some other solution?

2

The thing with 2D array is they are still linear in memory.
Typically, you would indeed, flatten it into a a long stripe, then serialize it into sequence of bytes.

During Loading, re-construct 2D array from those bytes, just like you would any other entity.

Also, check here Serialize Multi-Dimensional Arrays

using System.Runtime.Serialization.Formatters.Binary;  
...  
int[,] theArray = new int[2,3]={...};  
BinaryFormatter bf = new BinaryFormatter();  
MemoryStream ms = new MemoryStream();  
bf.Serialize(ms, theArray);