Random file access. reading a struct written from C++

i'm sort of new to c# i have a program i wrote in c++ that manages airport terminal data. the data was in structs that i simply wrote to a file. each flight was a seperate struct and i just read them back until eof. i am writing an app in c# that needs to look and change this data. ive written a similar app in c++, i thought it'd be an easy conversion.
the struct in c++ looks like:
      struct FlightData_str
      {
            char      dataCell[11][200],
            breakoutOrig[10][10],
            breakoutConn[10][10];
      };
and each file had an airports struct that this program doesnt need really, i read it in just to get passed it before i looped the flight structs
      struct Airport_str
      {
            char                  airportName[100];
            char                  terminalName[100];
            unsigned int      kioskProcessTime,
                               mobileProcessTime,
                               validatorProcessTime;
            unsigned int      usvLocNum;                  //number of proposed locations
            unsigned int      usvLoc[10];                  //locations workstation #
            char                  usvLocTxt[10][100];

            unsigned int      origNum;                  //number of originating arrival locations
            unsigned int      origChoice[10][3];      //array of choices
            unsigned int      connNum;                  //number of connecting arrival locations
            unsigned int      connChoice[10][3];      //array of choices
      };
///////////////
i need to know where to start. im searching but i cant seem to figure out which way to go. serialize/deserialize, marshaling..
since they are array of chars in c++ can i use some simple byte array?
problem is they are 2d arrays and i never see examples of that
these are mostly numbers, some 3 or 4 character strings. i used all char arrays because i grabbed the data off the user interface.