Launching a Transaction ​

var req = new WorkflowRequestModel()
          {
              Workflows = new List<object> { myWorkflow }
          };

var api = new WorkflowsApi(myRestEndpointUrl);
var results = api.GetWorkflows(req, apiKey, apiSecret, apiUsername, apiPassword);
if (results.IsSuccessful.Value)
{
    var transaction = results.Transactions[0];

    // Update or Inject all unique launch data here
    // =============================================
    transaction.Description = "My Altered Description";
    transaction.Participants[0].FullName = "<Inject Signer Name Here>";
    transaction.Participants[0].EmailAddress = "<Inject Email Address Here>";
    // =============================================

    var transactionReq = new TransactionCreateRequestModel()
                         {
                             Transactions = new List<TransactionCreateModel> { transaction }
                         };

    var transactionApi = new TransactionsApi(myTransactionRestEndpointUrl);
    var transactionResults = transactionApi.CreateTransactions(transactionReq, apiKey, apiSecret, apiUsername, apiPassword);
    if (transactionResults.IsSuccessful.Value)
    {
        // Do work
    }
}