multiple balance outputs

multiple.cs

using Nethereum.Web3;
using Nethereum.ABI.FunctionEncoding.Attributes;
using Nethereum.Contracts.CQS;
using Nethereum.Util;
using Nethereum.Web3.Accounts;
using Nethereum.Hex.HexConvertors.Extensions;
using Nethereum.Contracts;
using Nethereum.Contracts.Extensions;
using Nethereum.RPC.Eth.DTOs;
using System;
using System.Numerics;
using System.Threading;
using System.Threading.Tasks;


public class GetStartedSmartContracts
{
	 [FunctionOutput]
 public class BalanceOfOutputDTO : IFunctionOutputDTO
 {
      [Parameter("uint256", "balance", 1)]
      public BigInteger Balance { get; set; }
 }

//If we were going to return multiple values we could have something like:

 [FunctionOutput]
 public class BalanceOfOutputMultipleDTO : IFunctionOutputDTO
 {
      [Parameter("uint256", "balance1", 1)]
      public BigInteger Balance1 { get; set; }

      [Parameter("uint256", "balance2", 2)]
      public BigInteger Balance2 { get; set; }

      [Parameter("uint256", "balance1", 3)]
      public BigInteger Balance3 { get; set; }
 }

 [Function("balanceOf", "uint256")]
public class BalanceOfFunction : FunctionMessage
{
    [Parameter("address", "_owner", 1)]
    public string Owner { get; set; }
}


    public static async Task Main()
    {
// ### Instantiating Web3 and the Account
// To create an instance of web3 we first provide the url of our testchain and the private key of our account. 
// Here we are using http://testchain.nethereum.com:8545 which is our simple single node Nethereum testchain.
// When providing an Account instantiated with a  private key, all our transactions will be signed by Nethereum.

        var url = "http://testchain.nethereum.com:8545";
        var privateKey = "0x7580e7fb49df1c861f0050fae31c2224c6aba908e116b8da44ee8cd927b990b0";
        var account = new Account(privateKey);
        var web3 = new Web3(account, url);

//This is the contract bytecode (compile executable) and Abi
        var contractByteCode =
            "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";
        var abi =
            @"[{""constant"":false,""inputs"":[{""name"":""_spender"",""type"":""address""},{""name"":""_value"",""type"":""uint256""}],""name"":""approve"",""outputs"":[{""name"":""success"",""type"":""bool""}],""type"":""function""},{""constant"":true,""inputs"":[],""name"":""totalSupply"",""outputs"":[{""name"":""supply"",""type"":""uint256""}],""type"":""function""},{""constant"":false,""inputs"":[{""name"":""_from"",""type"":""address""},{""name"":""_to"",""type"":""address""},{""name"":""_value"",""type"":""uint256""}],""name"":""transferFrom"",""outputs"":[{""name"":""success"",""type"":""bool""}],""type"":""function""},{""constant"":true,""inputs"":[{""name"":""_owner"",""type"":""address""}],""name"":""balanceOf"",""outputs"":[{""name"":""balance"",""type"":""uint256""}],""type"":""function""},{""constant"":false,""inputs"":[{""name"":""_to"",""type"":""address""},{""name"":""_value"",""type"":""uint256""}],""name"":""transfer"",""outputs"":[{""name"":""success"",""type"":""bool""}],""type"":""function""},{""constant"":true,""inputs"":[{""name"":""_owner"",""type"":""address""},{""name"":""_spender"",""type"":""address""}],""name"":""allowance"",""outputs"":[{""name"":""remaining"",""type"":""uint256""}],""type"":""function""},{""inputs"":[{""name"":""_initialAmount"",""type"":""uint256""}],""type"":""constructor""},{""anonymous"":false,""inputs"":[{""indexed"":true,""name"":""_from"",""type"":""address""},{""indexed"":true,""name"":""_to"",""type"":""address""},{""indexed"":false,""name"":""_value"",""type"":""uint256""}],""name"":""Transfer"",""type"":""event""},{""anonymous"":false,""inputs"":[{""indexed"":true,""name"":""_owner"",""type"":""address""},{""indexed"":true,""name"":""_spender"",""type"":""address""},{""indexed"":false,""name"":""_value"",""type"":""uint256""}],""name"":""Approval"",""type"":""event""}]";


// **** DEPLOYING THE SMART CONTRACT
// The solidity smart contract constructor for this standard ERC20 smart contract is as follows:
//function Standard_Token(uint256 _initialAmount) 
//{         balances[msg.sender] = _initialAmount;         
//         _totalSupply = _initialAmount;     
//}
//This means we need to supply a parameter to a constructor on deployment

        var totalSupply = BigInteger.Parse("1000000000000000000");
        var senderAddress = account.Address;
        //When working with untyped smart contract defintions the parameters are passed as part of a params object array, and recognised and map using the abi.
        var receipt = await web3.Eth.DeployContract.SendRequestAndWaitForReceiptAsync(abi,
            contractByteCode, senderAddress, new Nethereum.Hex.HexTypes.HexBigInteger(900000), null, totalSupply);
        Console.WriteLine("Contract deployed at address: " + receipt.ContractAddress);

//Using our contract address we can interact with the contract as follows:
        var contract = web3.Eth.GetContract(abi, receipt.ContractAddress);

//Using the contract we can retrieve the functions using their name.
        var transferFunction = contract.GetFunction("transfer");
        var balanceFunction = contract.GetFunction("balanceOf");

        var newAddress = "0xde0B295669a9FD93d5F28D9Ec85E40f4cb697BAe";

//Using a CallAsyc we can query the smart contract for values
        var balance = await balanceFunction.CallAsync<int>(newAddress);
        Console.WriteLine($"Account {newAddress} balance: {balance}");
        Console.WriteLine("Transfering 1000 tokens");
        var amountToSend = 1000;
//Sending transactions will commit the information to the chain, before submission we need to estimate the gas (cost of the transaction)
//In a similar way any parameters required by the function are included at the end of the method in the same order as per the solidity function.
        var gas = await transferFunction.EstimateGasAsync(senderAddress, null, null, newAddress, amountToSend);
        var receiptAmountSend =
            await transferFunction.SendTransactionAndWaitForReceiptAsync(senderAddress, gas, null, null, newAddress,
                amountToSend);

        balance = await balanceFunction.CallAsync<int>(newAddress);
        Console.WriteLine($"Account {newAddress} balance: {balance}");

var balanceOfFunctionMessage = new BalanceOfFunction()
{
    Owner = account.Address,
};

var contractAddress = contract.Address;
var balanceHandler = web3.Eth.GetContractQueryHandler<BalanceOfFunction>();
//var balance2 = await balanceHandler.QueryAsync<BigInteger>(contractAddress, balanceOfFunctionMessage);

 balance = await balanceFunction.CallDeserializingToObjectAsync<BalanceOfOutputDTO>( balanceOfFunctionMessage, contractAddress);
				//var balance = await balanceHandler.CallDeserializingToObjectAsync<BalanceOfOutputDTO>( balanceOfFunctionMessage, contractAddress);
    }