Trying to transfer ERC20 token using C# .NET Nethereum package

Question

Can someone help me successfully send ERC20 tokens using the Nethereum package in C# .NET? I am able to successfully get account balances, but when I try to send, it just sits there....

I am using the Infura.io project api also with the below security:

eth_accounts
eth_call
eth_getBalance
eth_getTransactionReceipt
eth_sendRawTransaction

var client = new EthClient(new RpcUrl("https://mainnet.infura.io/v3/-MyProjectID-"));

Here is the code I am using:

--The call to the transfer method

/* transfer 100 tokens */
        var transactionHashTask = client.transferTokens(coinOwnerAddress, coinOwnerPrivateKey, toAddress, contractAddress, 0);
        var transactionHash = transactionHashTask.Result.ToString();
        lblTransHash.Text = "Transaction hash: " + transactionHash;

--Code that contains the actual method

        public async Task<string> transferTokens(string senderAddress, string privateKey, string receiverAddress, string contractAddress, UInt64 tokens)
    {
        var transactionMessage = new TransferFunction()
        {
            FromAddress = senderAddress,
            To = receiverAddress,
            AmountToSend = tokens
            
        };
        var transferHandler = web3.Eth.GetContractTransactionHandler<TransferFunction>();
        Task<string> transactionHashTask = transferHandler.SendRequestAsync(contractAddress,transactionMessage);
        return await transactionHashTask;
    }

Update: I was able to get an error message: RpcResponseException: execution reverted: eth_estimateGas Any idea's? — user2634840, Jan 17 '22 at 04:28

Dumber_Texan2 · Answer 1 · 2023-03-03T00:30:48.597

You might have to add something like this to your transactionMessage. Figure out what the Gas price is for the Blockchain network you are transacting with and use that. Here is an example.

transferHandler.Gas = Web3.Web3.Convert.ToWei(0.000112, Nethereum.Util.UnitConversion.EthUnit.Gwei);

Also, take a look at this Doc. Value or _value is actually TokenAmount.

https://docs.nethereum.com/en/latest/nethereum-smartcontrats-gettingstarted/

TransferFunction should look like this.

      To = To,
      //Shows Value in MetaMask
      Value = Web3.Web3.Convert.ToWei(Value, ERC20Contract.DecimalPlaces),
      //Amount to actually transfer
      AmountToSend = Web3.Web3.Convert.ToWei(Value, ERC20Contract.DecimalPlaces),

score 0 · Answer 2 · answered May 23 '22 at 05:26

0

You are transferring something right? So maybe you have to send extra to account for the gas fees. But i'm no expert. Let me know if you solve this please.

answered May 23 '22 at 05:26

Bazoo Studios LLC

131
1
3

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score 0 · Answer 3 · answered Oct 15 '22 at 03:38

0

The transfer function doesn't have AmountToSend parameter. It has TokenAmount. So change like below

var transactionMessage = new TransferFunction()
    {
        To = receiverAddress,
        TokenAmount= tokens
        
    };

answered Oct 15 '22 at 03:38

Jini Jose

1
1

Here is the AmountToSend param. https://github.com/Nethereum/Nethereum/blob/master/src/Nethereum.Contracts/CQS/ContractMessageBase.cs – Dumber_Texan2 Mar 01 '23 at 20:55

Trying to transfer ERC20 token using C# .NET Nethereum package

3 Answers3