c# - AES CBC Not Producing Correct Vectors -

i have 2 methods encryption , decryption in cbc mode. have ready verified ecb methods , function properly. issue when test encryption in cbc test vectors passes them. , when test cbc decryption same vectors make sure can go other way, passes tests well. when pass encryption decryption, don't same vector back. doesn't make sense me.

public byte[,] encrypt(byte[,] datatoencrypt, byte[] givenkey, byte[] initializationvector)     {         //xor data iv         (int row = 0; row < 4; row++)         {             datatoencrypt[row,0] ^= initializationvector[4*row];             datatoencrypt[row, 1] ^= initializationvector[(4 * row) + 1];             datatoencrypt[row, 2] ^= initializationvector[(4 * row) + 2];             datatoencrypt[row, 3] ^= initializationvector[(4 * row) + 3];         }          ecb encryptor = new ecb();         return encryptor.encrypt(datatoencrypt, givenkey);     }      public byte[,] decrypt(byte[,] datatodecrypt, byte[] givenkey, byte[] initializationvector)     {         ecb encryptor = new ecb();          byte[,] plaintext = encryptor.decrypt(datatodecrypt, givenkey);          (int row = 0; row < 4; row++)         {             plaintext[row, 0] ^= initializationvector[4 * row];             plaintext[row, 1] ^= initializationvector[(4 * row) + 1];             plaintext[row, 2] ^= initializationvector[(4 * row) + 2];             plaintext[row, 3] ^= initializationvector[(4 * row) + 3];         }          return plaintext;     } 

encryptor class aes in ecb form. these methods supposed take in xor's cbc. can tell me if seems wrong?

this single block of data testing, not large amounts of data.

i fixed issue. problem fact encryption there has reference object data encrypting rather equaling values. apologize posting question stupid error making. comments though. , here new encryption method, in case cares:

public byte[,] encrypt(byte[,] datatoencrypt, byte[] givenkey, byte[] initializationvector)     {         //setup         ecb encryptor = new ecb();         byte[,] cyphertext = new byte[4,4];          //xor data iv         (int row = 0; row < 4; row++)         {             cyphertext[row, 0] = (byte)(datatoencrypt[row, 0] ^ initializationvector[4 * row]);             cyphertext[row, 1] = (byte)(datatoencrypt[row, 1] ^ initializationvector[(4 * row) + 1]);             cyphertext[row, 2] = (byte)(datatoencrypt[row, 2] ^ initializationvector[(4 * row) + 2]);             cyphertext[row, 3] = (byte)(datatoencrypt[row, 3] ^ initializationvector[(4 * row) + 3]);         }           return encryptor.encrypt(cyphertext, givenkey);     }