C++ to C# code conversion issue

typedef enum          { _A,_B,_C,_D,_E,_F,_G,_H,_I,_J,_K,_L,_M,_N,_O,_1,_2,_3 } TKeyIdentity;
typedef std::vector<TKeyIdentity const>     TKeyPath;
typedef std::vector<TKeyPath const>         TKeyMap;

const TKeyPath keyPadRoot =
{
    _A, _B, _C, _D, _E, _F, _G, _H, _I, _J, _K, _L, _M, _N, _O, _1, _2, _3
}

const TKeyMap keyPad =
{
    { _H, _L },         // A
    { _I, _K, _M },     // B
    { _F, _J, _L, _N }, // C
    { _G, _M, _O },     // D
    { _H, _N },         // E    
    { _C, _M, _1 },     // F  (_1) not valid for 2 moves followed by 1 move rule
    { _D, _N, _2 },     // G
    { _A, _E, _K, _O, _1, _3 }, // H
    { _B, _L, _2 },     // I
    { _C, _M, _3 },     // J  (_3) not valid for 2 moves followed by 1 move rule
    { _B, _H, _2 },     // K
    { _A, _C, _I, _3 }, // L
    { _B, _D, _F, _J }, // M
    { _C, _E, _G, _1 }, // N
    { _D, _H, _2 },     // O (oh)
    { _F, _H, _N },     // 1
    { _G, _I, _K, _O }, // 2 (_K) & (_O) not valid for 2 moves followed be 1 move rule
    { _H, _J, _L }      // 3
};
TraverseKeyPaths( TKeyPath const &keyPath, int pressesRemaining, int vowelsAllowed )
{
 foreach (TKeyIdentity pressedKey in Enum.GetValues(typeof(TKeyIdentity)))
  {
	int value =  TraverseKeyPaths( keyPad[ pressedKey ],pressesRemaining, vowelsAllowed - isVowel[pressedKey] );
  }

}

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  enum TKeyIdentity { _A, _B, _C, _D, _E, _F, _G, _H, _I, _J, _K, _L, _M, _N, _O, _1, _2, _3 };
  List<string> keyPadRoot = new List<string> { "_A", "_B", "_C", "_D", "_E", "_F", "_G", "_H", "_I", "_J", "_K", "_L", "_M", "_N", "_O", "_1", "_2", "_3" };

  string[] A = new string[] { "_H", "_L" }; //A
  string[] B = new string[] { "_I", "_K", "_M" }; //B
  .
  .
  .
  etc

 List<string> keyPadMoves = new List<string>(););

 keyPadMoves.AddRange(A);
 keyPadMoves.AddRange(B);
 .
 .
 .
etc

int TraverseKeyPaths(List<string> keyPadRoot, int pressesRemaining, int vowelsAllowed)
{
 	foreach (TKeyIdentity pressedKey in Enum.GetValues(typeof(TKeyIdentity)))
	{
		int value =  value = TraverseKeyPaths(keyPadRoot, pressesRemaining, vowels);
	}
}

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int value =   TraverseKeyPaths(keyPadRoot, pressesRemaining, vowels);