private static async Task ShowAccountTransactionsAsync(int accountNumber)
{
Console.WriteLine("TxNumber\tDate\tAmount");
using (var context = new Recipe9Context())
{
var transactions = context.Transactions.Where(t => t.AccountNumber == accountNumber);
await transactions.ForEachAsync(t => Console.WriteLine("{0}\t{1}\t{2}", t.TransactionNumber, t.TransactionDate, t.Amount));
}
}
private static async Task SaveAccountTransactionsAsync(int accountNumber, ICollection <Transaction> transactions)
{
using (var context = new Recipe9Context())
{
var account = new Account {
AccountNumber = accountNumber
};
context.Accounts.Attach(account);
context.Entry(account).Collection(a => a.Transactions).Load();
foreach (var transaction in transactions.OrderBy(t => t.TransactionDate))
{
account.Transactions.Add(transaction);
}
await context.SaveChangesAsync();
}
}
public static async Task Run()
{
using (var context = new Recipe9Context())
{
var account1 = new Account
{
AccountHolder = "Robert Dewey",
Transactions = new HashSet <Transaction>()
{
new Transaction
{
TransactionDate = Convert.ToDateTime("07/05/2013"),
Amount = 104.00M
},
new Transaction
{
TransactionDate = Convert.ToDateTime("07/12/2013"),
Amount = 104.00M
},
new Transaction
{
TransactionDate = Convert.ToDateTime("07/19/2013"),
Amount = 104.00M
}
}
};
var account2 = new Account
{
AccountHolder = "James Cheatham",
Transactions = new List <Transaction>
{
new Transaction
{
TransactionDate = Convert.ToDateTime("08/01/2013"),
Amount = 900.00M
},
new Transaction
{
TransactionDate = Convert.ToDateTime("08/02/2013"),
Amount = -42.00M
}
}
};
var account3 = new Account
{
AccountHolder = "Thurston Howe",
Transactions = new List <Transaction>
{
new Transaction
{
TransactionDate = Convert.ToDateTime("08/05/2013"),
Amount = 100.00M
}
}
};
context.Accounts.Add(account1);
context.Accounts.Add(account2);
context.Accounts.Add(account3);
context.SaveChanges();
//Add monthly service charges for each account.
foreach (var account in context.Accounts)
{
var transactions = new List <Transaction>
{
new Transaction
{
TransactionDate = Convert.ToDateTime("08/09/2013"),
Amount = -5.00M
},
new Transaction
{
TransactionDate = Convert.ToDateTime("08/09/2013"),
Amount = -2.00M
}
};
Task saveTask = SaveAccountTransactionsAsync(account.AccountNumber, transactions);
Console.WriteLine("Account Transactions for the account belonging to {0} (acct# {1})", account.AccountHolder, account.AccountNumber);
await saveTask;
await ShowAccountTransactionsAsync(account.AccountNumber);
}
}
}