ASP.NET

#region Password Util
   /// <summary>
   /// Encrypts a string using the SHA256 algorithm.
   /// </summary>
   public static string HashPassword(string plainMessage)
   {
       byte[] data = Encoding.UTF8.GetBytes(plainMessage);
       using (HashAlgorithm sha = new SHA256Managed())
       {
           byte[] encryptedBytes = sha.TransformFinalBlock(data, 0, data.Length);
           return Convert.ToBase64String(sha.Hash);
       }


   }


   #endregion

   protected void btnSubmit_Click(object sender, EventArgs e)
   {
       bo.UserID = txtUserId.Text;
       Password p = new Password(txtPassword.Text.ToString());
       String newpwd = p.SaltedPassword;
       System.Nullable<int> newsaltkey = p.Salt;
       bo.Encryptpwd = newpwd;
       bo.Saltkey = p.Salt;
       bo.Password = txtPassword.Text;

       passwordFormat = MembershipPasswordFormat.Hashed;
       if (passwordFormat == MembershipPasswordFormat.Hashed)
           bo.Blogpwd = HashPassword(txtPassword.Text);
       else
           bo.Blogpwd = txtPassword.Text;