runtime error - Not enough storage is available to process this command - C# -

i'm new c# programming , keep running following runtime error :

"an unhandled exception of type 'system.componentmodel.win32exception' occurred in system.drawing.dll"

i post relevant code down below :

    public static tile[,] tile = new tile[maxtilesx, maxtilesy];     public static int netmode = 0;      public game1()     {         threadpool.queueuserworkitem(new waitcallback(worldgencallback), 1);     }      public static void worldgencallback(object threadcontext)     {         clearworld();         generateworld(-1);     }      public static void clearworld()     {         if (netmode != 1)         {             (int k = 0; k < maxtilesx; k++)             {                 (int l = 0; l < maxtilesy; l++)                 {                     tile[k, l] = new tile(); //the error occurs on line                 }             }         }     } 

i've done console testing , error occurs after couple thousand loops through second for-loop.

edit : relevant code tile-class :

public class tile : microsoft.xna.framework.game {     public bool active;     public byte type; } 

in worldgeneration process, following code used tile

while ((double)num11 < num3) //main output              {                 tile[i, num11].active = false;                   tile[i, num11].framex = -1;                 tile[i, num11].framey = -1;                 num11++;             }             (int j = (int)num3; j < maxtilesy; j++)             {                 if ((double)j < num4)                  {                     tile[i, j].active = true;                      tile[i, j].type = 0;                      tile[i, j].framex = -1;                     tile[i, j].framey = -1;                 }                 else                 {                     tile[i, j].active = true;                      tile[i, j].type = 1;                      tile[i, j].framex = -1;                     tile[i, j].framey = -1;                 }             } 

anyone able out?