使用.net进行Algorand开发系列教程之ASA的创建及管理

    string ALGOD_API_ADDR = "ALGOD_API_ADDR";  //在此处添加ALGOD TESTNET API地址
        string ALGOD_API_TOKEN = "ALGOD_API_TOKEN";    //在此处添加ALGOD API KEY
    AlgodApi algodApiInstance = new AlgodApi(ALGOD_API_ADDR, ALGOD_API_TOKEN);

    // 这三个账号只用于演示，在实际使用时永远不要直接将助记词放在代码中
    string account1_mnemonic = "portion never forward pill lunch organ biology"
                                + " weird catch curve isolate plug innocent skin grunt"
                                + " bounce clown mercy hole eagle soul chunk type absorb trim";
    string account2_mnemonic = "place blouse sad pigeon wing warrior wild script"
                        + " problem team blouse camp soldier breeze twist mother"
                        + " vanish public glass code arrow execute convince ability"
                        + " there";
    string account3_mnemonic = "image travel claw climb bottom spot path roast "
                        + "century also task cherry address curious save item "
                        + "clean theme amateur loyal apart hybrid steak about blanket";

    Account acct1 = new Account(account1_mnemonic);
    Account acct2 = new Account(account2_mnemonic);
    Account acct3 = new Account(account3_mnemonic);
    // 获取algorand网络的基本信息
var transParams = algodApiInstance.TransactionParams();

    // Create the Asset（创建ASA）
    // Total number of this asset available for circulation    
    var ap = new AssetParams(creator: acct1.Address.ToString(), assetname: "latikum22", 
        unitname: "LAT", defaultfrozen: false, total: 10000,
        url: "http://this.test.com", metadatahash: Convert.ToBase64String(
            Encoding.ASCII.GetBytes("16efaa3924a6fd9d3a4880099a4ac65d")))
    {
        // 每种地址的意义请参照https://developer.algorand.org/docs/features/asa/
        // 默认情况下manager/reserve/freeze/clawback账号都是sender
        // 如果设置了manager,其他没有设置的地址reserve/freeze/clawback都会是manager
        Managerkey = acct1.Address.ToString(),
        Clawbackaddr = acct2.Address.ToString(),
        Freezeaddr = acct1.Address.ToString(),
        Reserveaddr = acct1.Address.ToString()
    };

    var tx = Utils.GetCreateAssetTransaction(ap, transParams, "asset tx message");

    // Sign the Transaction by sender
    SignedTransaction signedTx = acct1.SignTransaction(tx);
    // send the transaction to the network and
    // wait for the transaction to be confirmed
    ulong? assetID = 0;
    try
    {
        TransactionID id = Utils.SubmitTransaction(algodApiInstance, signedTx);
        Console.WriteLine("Transaction ID: " + id);
        Console.WriteLine(Utils.WaitTransactionToComplete(algodApiInstance, id.TxId));
        // Now that the transaction is confirmed we can get the assetID
        Algorand.Algod.Client.Model.Transaction ptx = algodApiInstance.PendingTransactionInformation(id.TxId);
        assetID = ptx.Txresults.Createdasset;
    }
    catch (Exception e)
    {
        Console.WriteLine(e.StackTrace);
        return;
    }
    Console.WriteLine("AssetID = " + assetID);
    // 现在ASA已经创建

// 修改ASA的设置
    // Next we will change the asset configuration
    // First we update standard Transaction parameters
    // To account for changes in the state of the blockchain
    transParams = algodApiInstance.TransactionParams();
    ap = algodApiInstance.AssetInformation((long?)assetID);

    // 修改ASA设置必须由manager账号执行，在本例是中acct2
    // Note in this transaction we are re-using the asset
    // creation parameters and only changing the manager
    // and transaction parameters like first and last round
    // now update the manager to acct1
    ap.Managerkey = acct2.Address.ToString();
    tx = Utils.GetConfigAssetTransaction(acct1.Address, assetID, ap, transParams, "config trans");

    // The transaction must be signed by the current manager account
    // We are reusing the signedTx variable from the first transaction in the example    
    signedTx = acct1.SignTransaction(tx);
    // send the transaction to the network and
    // wait for the transaction to be confirmed
    try
    {
        TransactionID id = Utils.SubmitTransaction(algodApiInstance, signedTx);
        Console.WriteLine("Transaction ID: " + id.TxId);
        Console.WriteLine(Utils.WaitTransactionToComplete(algodApiInstance, id.TxId));
    }
    catch (Exception e)
    {
        //e.printStackTrace();
        Console.WriteLine(e.Message);
        return;
    }

    // Next we will list the newly created asset
    // Get the asset information for the newly changed asset            
    ap = algodApiInstance.AssetInformation((long?)assetID);
    //The manager should now be the same as the creator
    Console.WriteLine(ap);

    // 销毁资产
    // 销毁资产前所有资产需要回到创建者账号中
    // 销毁资产需要由Manage Addr进行操作
    // First we update standard Transaction parameters
    // To account for changes in the state of the blockchain
    transParams = algodApiInstance.TransactionParams();
    // Next we set asset xfer specific parameters
    // The manager must sign and submit the transaction
    // This is currently set to acct2
    tx = Utils.GetDestroyAssetTransaction(acct2.Address, assetID, transParams, "destroy transaction");
    // The transaction must be signed by the manager account
    // We are reusing the signedTx variable from the first transaction in the example    
    signedTx = acct2.SignTransaction(tx);
    // send the transaction to the network and
    // wait for the transaction to be confirmed
    try
    {
        TransactionID id = Utils.SubmitTransaction(algodApiInstance, signedTx);
        Console.WriteLine("Transaction ID: " + id);
        Console.WriteLine(Utils.WaitTransactionToComplete(algodApiInstance, id.TxId));
        // We can now list the account information for acct1 
        // and see that the asset is no longer there
        act = algodApiInstance.AccountInformation(acct1.Address.ToString());
    }
    catch (Exception e)
    {
        Console.WriteLine(e.Message);
        return;
    }
    Console.WriteLine("You have successefully arrived the end of this test, please press and key to exist.");
    Console.ReadKey();