protected async void Page_Load(object sender, EventArgs e)
            var senderAddress = "0x605a1f8d368cbdd4d0a5cbad74f75c428660f17b";
            var password = "zxcasdqwe123";
            var abi = @"[{""constant"":false,""inputs"":[{""name"":""passAddress"",""type"":""address""}],""name"":""isWhitelisted"",""outputs"":[{""name"":"""",""type"":""bool""}],""payable"":false,""type"":""function""},{""constant"":false,""inputs"":[{""name"":""userAddress"",""type"":""address""}],""name"":""userAdd"",""outputs"":[],""payable"":false,""type"":""function""},{""inputs"":[],""payable"":false,""type"":""constructor""}]";
            var web3 = new Nethereum.Web3.Web3();
            var newAddress = "0xE96932536293CF4712180973c6201DDbDf6fa3C0";
            /*var unlockAccountResult = await web3.Personal.UnlockAccount.SendRequestAsync(senderAddress, password, new HexBigInteger(120));
            //var transactionHash = await web3.Eth.DeployContract.SendRequestAsync(abi, byteCode, senderAddress, newAddress);
            //var receipt = await web3.Eth.Transactions.GetTransactionReceipt.SendRequestAsync(transactionHash);
            //while (receipt == null)
            //    Thread.Sleep(5000);
            //    receipt = await web3.Eth.Transactions.GetTransactionReceipt.SendRequestAsync(transactionHash);
            //var contractAddress = receipt.ContractAddress;
            var contract = web3.Eth.GetContract(abi, "0x23699275461c4755377c293bb657e84d3ddfdbd9");
            var fucntion = contract.GetFunction("userAdd");
            var result = await fucntion.CallAsync<String>("0xE96932536293CF4712180973c6201DDbDf6fa3C0");

I have deployed my contract on rinkeby and got the address and now i am calling my fucntion of my contract but it is showing me null.

help thanx in advance

  • always mask passwords when you post stuff here! – RononDex Dec 20 '17 at 12:32
  • Did you ever get an answer to this question? If so, kindly share. – Vishant Patil Jan 30 '18 at 6:29
  • This does not really answer the question. If you have a different question, you can ask it by clicking Ask Question. You can also add a bounty to draw more attention to this question once you have enough reputation. - From Review – natewelch_ Jan 30 '18 at 13:15

From your ABI it looks like there are no output parameters for the function userAdd?

If you are trying to send a transaction to modify state you should use fucntion.SendTransactionAsync(...) not CallAsync

There will be no value returned from a transaction. Check the status in the receipt.

Also, depending on the version of Nethereum you are using you may need to Unlock the sending account first.


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