Does System.Security.Cryptography support AesEcbPkcs7?

Question

I have data encrypted by using Windows.Security.Cryptography. The working decryption code is the following:

public static string DecryptSymetric(byte[] buffEncrypt, string sKey)
{
    // Declare a buffer to contain the decrypted data.
    IBuffer buffDecrypted;
    // Open an symmetric algorithm provider for the specified algorithm. 
    SymmetricKeyAlgorithmProvider objAlg = SymmetricKeyAlgorithmProvider.OpenAlgorithm(SymmetricAlgorithmNames.AesEcbPkcs7);
    BinaryStringEncoding encoding = BinaryStringEncoding.Utf8;
    // Create the symmetric key.
    IBuffer keyMaterial = CryptographicBuffer.ConvertStringToBinary(sKey, encoding);
    CryptographicKey key = objAlg.CreateSymmetricKey(keyMaterial);

    //Only CBC algorithms require an initialization vector.  For others, the initialization vector can be null
    buffDecrypted = CryptographicEngine.Decrypt(key, buffEncrypt, null);

    return CryptographicBuffer.ConvertBinaryToString(encoding, buffDecrypted);

}

Now, I have to use System.Security.Cryptography of .Net to decrypt the data. I have tried System.Security.Cryptography.Aes, but failed. I am wondering if anyone could provide a tip on which I should go about this. At this point of time, I just need a direction. I can try it and post the results here.

[Edit]: I have tried the following code:

public static string DecryptSymetric(byte[] buffEncrypt, string sKey)
{
    using (Aes aes = Aes.Create())
    {
        aes.Key = Encoding.UTF8.GetBytes(sKey); 
        aes.IV = new byte[16]; 

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

        // Create the streams used for decryption.
        using (MemoryStream msDecrypt = new MemoryStream(buffEncrypt))
        {
            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.
                    string sDecrypted = srDecrypt.ReadToEnd();
                    return sDecrypted;
                }
            }
        }
    }

}

srDecrypt.ReadToEnd() throws the following exception:

System.Security.Cryptography.CryptographicException: Specified padding mode is not valid for this algorithm.
   at Internal.Cryptography.UniversalCryptoDecryptor.DepadBlock(Byte[] block, Int32 offset, Int32 count)
   at Internal.Cryptography.UniversalCryptoDecryptor.UncheckedTransformFinalBlock(Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount)
   at Internal.Cryptography.UniversalCryptoTransform.TransformFinalBlock(Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount)
   at System.Security.Cryptography.CryptoStream.FlushFinalBlock()
   at System.Security.Cryptography.CryptoStream.Dispose(Boolean disposing)
   at System.IO.Stream.Close()
   at System.IO.StreamReader.Dispose(Boolean disposing)
   at System.IO.TextReader.Dispose()

[edit] 2019-05-22 Second edit in the hope of reopening this question to allow a proven good answer to be posted an accepted.

[edit] 2019-05-24

Third edit in the hope of reopening this question to allow a proven good answer to be posted an accepted. If you would like to help, please click reopen below.