在这个教程中，我们将使用C#来开发一个比特币钱包，我们使用NBitcoin这个库。教程中的代码实现了比特币的存储、接收和支付功能，可以很容易地移植到其他应用中。

如果要快速掌握NBitcoin的使用方法，推荐访问汇智网的课程：

C#比特币开发详解

我们要开发的比特币钱包要实现以下功能：

首先需要引入NBitcoin开发包以及QBitNinja开发包：

using NBitcoin;using QBitNinja.Client;using QBitNinja.Client.Models;生成BIP39助记词

我们需要保存下来生成的助记词：

public void MssGenerateMnemo(out string ssMnemo) {Mnemonic mnemonic = new Mnemonic(Wordlist.English, WordCount.Twelve);ssMnemo = mnemonic.ToString();}生成比特币地址

下面的代码可以利用NBitcoin生成比特币HD地址：

public void MssGenerateAddress( string ssMnemo, int ssKeynumber, bool ssIsTestNet, out string ssAddress, out string ssPrivateKey) { Network net; if (ssIsTestNet) net = Network.TestNet; else net = Network.Main; Mnemonic restoreNnemo = new Mnemonic(ssMnemo); ExtKey masterKey = restoreNnemo.DeriveExtKey(); KeyPath keypth = new KeyPath("m/44'/0'/0'/0/" + ssKeynumber); ExtKey key = masterKey.Derive(keypth); ssAddress = key.PrivateKey.PubKey.GetAddress(net).ToString(); ssPrivateKey = key.PrivateKey.GetBitcoinSecret(net).ToString();}获取比特币地址余额

下面的代码可以获取指定地址的比特币余额：

public void MssGetBalance( string ssAddress, bool ssIsUnspentOnly, bool ssIsTestNet, out decimal ssBalance, out decimal ssConfirmedBalance) { Network net; if (ssIsTestNet) net = Network.TestNet; else net = Network.Main; QBitNinjaClient client = new QBitNinjaClient(net); var balance = client.GetBalance(new BitcoinPubKeyAddress(ssAddress), ssIsUnspentOnly).Result; ssBalance = 0.0M; ssConfirmedBalance = 0.0M; if (balance.Operations.Count > 0) { var unspentCoins = new List<Coin>(); var unspentCoinsConfirmed = new List<Coin>(); foreach (var operation in balance.Operations) { unspentCoins.AddRange(operation.ReceivedCoins.Select(coin => coin as Coin)); if(operation.Confirmations > 0) unspentCoinsConfirmed.AddRange(operation.ReceivedCoins.Select(coin => coin as Coin)); } ssBalance = unspentCoins.Sum(x => x.Amount.ToDecimal(MoneyUnit.BTC)); ssConfirmedBalance = unspentCoinsConfirmed.Sum(x => x.Amount.ToDecimal(MoneyUnit.BTC)); }}向其他比特币地址转账

下面的代码可以利用NBitcoin实现向指定的地址转账比特币：

public void MssGetBalance( string ssAddress, bool ssIsUnspentOnly, bool ssIsTestNet, out decimal ssBalance, out decimal ssConfirmedBalance) { Network net; if (ssIsTestNet) net = Network.TestNet; else net = Network.Main; QBitNinjaClient client = new QBitNinjaClient(net); var balance = client.GetBalance(new BitcoinPubKeyAddress(ssAddress), ssIsUnspentOnly).Result; ssBalance = 0.0M; ssConfirmedBalance = 0.0M; if (balance.Operations.Count > 0) { var unspentCoins = new List<Coin>(); var unspentCoinsConfirmed = new List<Coin>(); foreach (var operation in balance.Operations) { unspentCoins.AddRange(operation.ReceivedCoins.Select(coin => coin as Coin)); if(operation.Confirmations > 0) unspentCoinsConfirmed.AddRange(operation.ReceivedCoins.Select(coin => coin as Coin)); } ssBalance = unspentCoins.Sum(x => x.Amount.ToDecimal(MoneyUnit.BTC)); ssConfirmedBalance = unspentCoinsConfirmed.Sum(x => x.Amount.ToDecimal(MoneyUnit.BTC)); }}

原文：Step by step guide to programming your own bitcoin wallet

汇智网翻译整理，转载请标明出处。