Example 11 | ThetaScan.io

Remix for Theta

Deploy Contract

Example 11 - Visual Studio C# application to get token or tFuel balances using Nethereum.web3.

Get tFuel Balance

var publicKey = "0xf9bef8565d0fc134f5dcb6601b686a2de45dfec6";
var web3 = new Nethereum.Web3.Web3("https://eth-rpc-api.thetatoken.org/rpc");
var balance = await web3.Eth.GetBalance.SendRequestAsync(publicKey);
var tfuelAmount = Web3.Convert.FromWei(balance.Value);

Get Token Balance

1

2
3
4
5
6
7
8
9
10
11
12
13

string tokenContractABI = @"[{""constant"":true,""inputs"":[],""name"":""name"",""outputs"":[{""name"":"""",""type"":""string""}],""payable"":false,""stateMutability"":""view"",""type"":""function""},{""constant"":false,""inputs"":[{""name"":""_spender"",""type"":""address""},{""name"":""_value"",""type"":""uint256""}],""name"":""approve"",""outputs"":[{""name"":""success"",""type"":""bool""}],""payable"":false,""stateMutability"":""nonpayable"",""type"":""function""},{""constant"":true,""inputs"":[],""name"":""totalSupply"",""outputs"":[{""name"":"""",""type"":""uint256""}],""payable"":false,""stateMutability"":""view"",""type"":""function""},{""constant"":false,""inputs"":[{""name"":""_from"",""type"":""address""},{""name"":""_to"",""type"":""address""},{""name"":""_value"",""type"":""uint256""}],""name"":""transferFrom"",""outputs"":[{""name"":""success"",""type"":""bool""}],""payable"":false,""stateMutability"":""nonpayable"",""type"":""function""},{""constant"":true,""inputs"":[],""name"":""decimals"",""outputs"":[{""name"":"""",""type"":""uint8""}],""payable"":false,""stateMutability"":""view"",""type"":""function""},{""constant"":true,""inputs"":[],""name"":""version"",""outputs"":[{""name"":"""",""type"":""string""}],""payable"":false,""stateMutability"":""view"",""type"":""function""},{""constant"":true,""inputs"":[{""name"":""_owner"",""type"":""address""}],""name"":""balanceOf"",""outputs"":[{""name"":""balance"",""type"":""uint256""}],""payable"":false,""stateMutability"":""view"",""type"":""function""},{""constant"":true,""inputs"":[],""name"":""symbol"",""outputs"":[{""name"":"""",""type"":""string""}],""payable"":false,""stateMutability"":""view"",""type"":""function""},{""constant"":false,""inputs"":[{""name"":""_to"",""type"":""address""},{""name"":""_value"",""type"":""uint256""}],""name"":""transfer"",""outputs"":[{""name"":""success"",""type"":""bool""}],""payable"":false,""stateMutability"":""nonpayable"",""type"":""function""},{""constant"":false,""inputs"":[{""name"":""_spender"",""type"":""address""},{""name"":""_value"",""type"":""uint256""},{""name"":""_extraData"",""type"":""bytes""}],""name"":""approveAndCall"",""outputs"":[{""name"":""success"",""type"":""bool""}],""payable"":false,""stateMutability"":""nonpayable"",""type"":""function""},{""constant"":true,""inputs"":[{""name"":""_owner"",""type"":""address""},{""name"":""_spender"",""type"":""address""}],""name"":""allowance"",""outputs"":[{""name"":""remaining"",""type"":""uint256""}],""payable"":false,""stateMutability"":""view"",""type"":""function""},{""inputs"":[],""payable"":false,""stateMutability"":""nonpayable"",""type"":""constructor""},{""payable"":false,""stateMutability"":""nonpayable"",""type"":""fallback""},{""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""}]";
string tokenContractAddress = "0xf9bef8565d0fc134f5dcb6601b686a2de45dfec6";
string tokenHolderAddress = "0x1336739b05c7ab8a526d40dcc0d04a826b5f8b03";

var web3 = new Web3("https://eth-rpc-api.thetatoken.org/rpc");
var contract = web3.Eth.GetContract(tokenContractABI, tokenContractAddress);

var balance = await contract.GetFunction("balanceOf").CallAsync(tokenHolderAddress);
var tokenDecimal = await contract.GetFunction("decimals").CallAsync();
var name = await contract.GetFunction("name").CallAsync();

var divideBy = Math.Pow(10, tokenDecimal);
var tokenBalance = (double)balance / (double)divideBy;

In this example we built an application in Visual Studio using C# Windows Forms App.

This allows you to create a Windows application that will interact with the Theta blockchain using Nethereum.web3. We created 2 functions, one that will return the tFuel value of an address and another that will return the TNT-20 tokens held by an address, the token name and the decimals of the contract.

You can change the TNT-20 Contract Address to any TNT-20 Token and it will return the balance that address holds. We put in the tDrop address in the example.

© 2024 Thetascan.io