Code to encrypt/decrypt string using key

EncryptDecryptString.cs

using System;
using System.Diagnostics;
using System.Security.Cryptography;
using System.Text;

namespace Helpers
{
    public class EncryptData
    {
        /// <summary>
        /// Defines the key for encryption and decryption
        /// </summary>
        public static string Key = "MyKey";
        /// <summary>
        ///  Encrypt method use key to encrypt string
        /// </summary>
        /// <param name="inputString">inputString<see cref="string"/></param>
        /// <returns>inputString <see cref="string"/></returns>
        public static string Encrypt(string inputString)
        {

            byte[] inputArray = UTF8Encoding.UTF8.GetBytes(inputString);
            TripleDESCryptoServiceProvider tripleDES = new TripleDESCryptoServiceProvider();
            tripleDES.Key = UTF8Encoding.UTF8.GetBytes(Key);
            tripleDES.Mode = CipherMode.ECB;
            tripleDES.Padding = PaddingMode.PKCS7;
            ICryptoTransform cTransform = tripleDES.CreateEncryptor();
            byte[] resultArray = cTransform.TransformFinalBlock(inputArray, 0, inputArray.Length);
            tripleDES.Clear();
            return Convert.ToBase64String(resultArray, 0, resultArray.Length);
        }

        /// <summary>
        ///  Decrypt method use key to decrypt string
        /// </summary>
        /// <param name="inputString">inputString<see cref="string"/></param>
       /// <returns>inputString <see cref="string"/></returns>
        public static string Decrypt(string inputString)
        {
            byte[] inputArray = Convert.FromBase64String(inputString);
            TripleDESCryptoServiceProvider tripleDES = new TripleDESCryptoServiceProvider();
            tripleDES.Key = UTF8Encoding.UTF8.GetBytes(Key);
            tripleDES.Mode = CipherMode.ECB;
            tripleDES.Padding = PaddingMode.PKCS7;
            ICryptoTransform cTransform = tripleDES.CreateDecryptor();
            byte[] resultArray = cTransform.TransformFinalBlock(inputArray, 0, inputArray.Length);
            tripleDES.Clear();
            return UTF8Encoding.UTF8.GetString(resultArray);
        }
    }
}