public Transaction GetTransactionById(long id)
{
try
{
string sql = "SELECT * FROM Transactions WHERE ID = @id";
con.Open();
var cmd = new SQLiteCommand(sql, con);
cmd.Parameters.AddWithValue("@id", id);
SQLiteDataReader reader = cmd.ExecuteReader();
reader.Read();
var transaction = new Transaction
{
ID = (long)reader["ID"],
DebitorID = (long)reader["DebitorID"],
Amount = (int)reader["Amount"],
Date = (string)reader["Date"]
};
con.Close();
return transaction;
}
catch (Exception e)
{
Console.WriteLine("Error: {0}\n{1}", e.Message, e.StackTrace);
}
return null;
}
public IEnumerable<Transaction> GetTransactions()
{
List<Transaction> transactions = null;
try
{
string sql = "SELECT * FROM Transactions";
con.Open();
var cmd = new SQLiteCommand(sql, con);
SQLiteDataReader reader = cmd.ExecuteReader();
Transaction transaction;
transactions = new List<Transaction>();
while (reader.Read())
{
transaction = new Transaction
{
ID = (long)reader["ID"],
DebitorID = (long)reader["DebitorID"],
Amount = (int)reader["Amount"],
Date = (string)reader["Date"]
};
transactions.Add(transaction);
}
con.Close();
}
catch (Exception e)
{
Console.WriteLine("Error: {0}\n{1}", e.Message, e.StackTrace);
}
return transactions;
}
public void UpdateTransaction(Transaction transaction)
{
try
{
string sql = "UPDATE Transactions WHERE ID = @id SET DebitorID = @did, Amount = @amount, Date = @date";
var cmd = new SQLiteCommand(sql, con);
cmd.Parameters.AddWithValue("@id", transaction.ID);
cmd.Parameters.AddWithValue("@did", transaction.DebitorID);
cmd.Parameters.AddWithValue("@amount", transaction.Amount);
cmd.Parameters.AddWithValue("@date", transaction.Date);
cmd.ExecuteNonQuery();
con.Close();
}
catch (Exception e)
{
Console.WriteLine("Error: {0}\n{1}", e.Message, e.StackTrace);
}
}
public void InsertTransaction(Transaction transaction)
{
try
{
string sql = "INSERT INTO Transactions (DebitorID, Amount, Date) VALUES (@did, @amount, @date)";
con.Open();
var cmd = new SQLiteCommand(sql, con);
cmd.Parameters.AddWithValue("@did", transaction.DebitorID);
cmd.Parameters.AddWithValue("@amount", transaction.Amount);
cmd.Parameters.AddWithValue("@date", DateTime.Now.ToString("yy-MM-dd HH:mm:ss"));
cmd.ExecuteNonQuery();
con.Close();
}
catch (Exception e)
{
Console.WriteLine("Error: {0}\n{1}", e.Message, e.StackTrace);
}
}
