问在c#和在线工具中使用AES加密时获得不同的输出

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Security.Cryptography;
using System.IO;
using System.ComponentModel;

namespace final_encryption
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {

                string original = "{50602604|U800EDE73F241AC2E58A7D74C879D1D77|4DB6C4}"; //"Here is some data to encrypt!";
                Console.WriteLine("Original:   " + original);
                Console.ReadLine();

                // Create a new instance of the RijndaelManaged
                // class.  This generates a new key and initialization 
                // vector (IV).
                byte[] key = new byte[16];
                for (int i = 0; i < 16; ++i)
                {
                    key[i] = 1;
                }

                byte[] iv = new byte[16];
                for (int i = 0; i < 16; ++i)
                {
                    iv[i] = 1;
                }
                using (RijndaelManaged myRijndael = new RijndaelManaged())
                {
                    // myRijndael.GenerateKey();
                    //myRijndael.GenerateIV();
                    myRijndael.Key = key;
                    myRijndael.IV = iv;
                    // Encrypt the string to an array of bytes.
                    byte[] encrypted = EncryptStringToBytes(original, myRijndael.Key, myRijndael.IV);

                    StringBuilder s = new StringBuilder();
                    foreach (byte item in encrypted)
                    {
                        s.Append(item.ToString("X2") + " ");
                    }
                    Console.WriteLine("Encrypted:   " + s);
                    Console.ReadLine();

                    // Decrypt the bytes to a string.
                    string decrypted = DecryptStringFromBytes(encrypted, myRijndael.Key, myRijndael.IV);

                    //Display the original data and the decrypted data.
                    Console.WriteLine("Decrypted:    " + decrypted);
                    Console.ReadLine();
                }

            }
            catch (Exception ex)
            {
                Console.WriteLine("Error: {0}", ex.Message);
                Console.ReadLine();

            }
        }
        static byte[] EncryptStringToBytes(string plainText, byte[] Key, byte[] IV)
        {
            // Check arguments.
            if (plainText == null || plainText.Length <= 0)
                throw new ArgumentNullException("plainText");
            if (Key == null || Key.Length <= 0)
                throw new ArgumentNullException("Key");
            if (IV == null || IV.Length <= 0)
                throw new ArgumentNullException("Key");
            byte[] encrypted;
            // Create an RijndaelManaged object
            // with the specified key and IV.
            using (RijndaelManaged rijAlg = new RijndaelManaged())
            {
                rijAlg.Key = Key;
                rijAlg.IV = IV;
                rijAlg.Mode = CipherMode.CBC;
                rijAlg.Padding = PaddingMode.Zeros;

                // Create a decrytor to perform the stream transform.
                ICryptoTransform encryptor = rijAlg.CreateEncryptor(rijAlg.Key, rijAlg.IV);

                // Create the streams used for encryption.
                using (MemoryStream msEncrypt = new MemoryStream())
                {
                    using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
                    {
                        using (StreamWriter swEncrypt = new StreamWriter(csEncrypt))
                        {



                            //Write all data to the stream.

                            swEncrypt.Write(plainText);
                        }
                        encrypted = msEncrypt.ToArray();
                    }
                }
            }


            // Return the encrypted bytes from the memory stream.
            return encrypted;

        }

        static string DecryptStringFromBytes(byte[] cipherText, byte[] Key, byte[] IV)
        {
            // Check arguments.
            if (cipherText == null || cipherText.Length <= 0)
                throw new ArgumentNullException("cipherText");
            if (Key == null || Key.Length <= 0)
                throw new ArgumentNullException("Key");
            if (IV == null || IV.Length <= 0)
                throw new ArgumentNullException("Key");

            // Declare the string used to hold
            // the decrypted text.
            string plaintext = null;

            // Create an RijndaelManaged object
            // with the specified key and IV.
            using (RijndaelManaged rijAlg = new RijndaelManaged())
            {
                rijAlg.Key = Key;
                rijAlg.IV = IV;
                rijAlg.Mode = CipherMode.CBC;
                rijAlg.Padding = PaddingMode.Zeros;

                // Create a decrytor to perform the stream transform.
                ICryptoTransform decryptor = rijAlg.CreateDecryptor(rijAlg.Key, rijAlg.IV);

                // Create the streams used for decryption.
                using (MemoryStream msDecrypt = new MemoryStream(cipherText))
                {
                    using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
                    {
                        using (StreamReader srDecrypt = new StreamReader(csDecrypt))
                        {

                            // Read the decrypted bytes from the decrypting stream
                            // and place them in a string.
                            plaintext = srDecrypt.ReadToEnd();
                        }
                    }
                }

            }

            return plaintext;
        }
    }
}