How to read in Matlab a C# DataTable ?

I would like to read a C# System.Data.DataTable with Matlab R2013b.

I converted it (in C#) to a 2D string[,], but I don't know how to use it in Matlab. Matlab can tell me the object I retrieved is : String[,] with properties: [...], but no more.

What I did in Matlab :

NET.addAssembly('MyLib');
import MyLib.*;
a = MyCsharpFunction()

String[,] with properties:
          Length: 1044
      LongLength: 1044
            Rank: 2
        SyncRoot: [1x1 System.String[,]]
      IsReadOnly: 0
     IsFixedSize: 1
  IsSynchronized: 0

I have seen on the web many references to the matlab objects such as mwArray, but I can't find the dll to use it in C#.

Can you help me ? Thanks

Matlab R2013b