// retrieve all objects
public static List <Customers_Rewards> GetAll()
{
// create SELECT command
string query =
"SELECT CustomerId, RewardId, RwdNumber " +
"FROM Customers_Rewards ";
SqlConnection connection = TravelExperts.GetConection();
List <Customers_Rewards> dataList = new List <Customers_Rewards>(); // epmty list
Customers_Rewards data; // for reading
// create connection
SqlCommand cmd = new SqlCommand(query, connection);
// open the conection
connection.Open();
// run the command
SqlDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
// build object list to return
while (reader.Read()) // if there is a object with this ID
{
data = new Customers_Rewards();
data.CustomerId = Convert.ToInt32(reader["CustomerId"]);
data.RewardId = Convert.ToInt32(reader["RewardId"]);
data.RwdNumber = reader["RwdNumber"].ToString();
dataList.Add(data);
}
return(dataList);
}
// makes identival copy of Customer
public Customers_Rewards Clone()
{
Customers_Rewards copy = new Customers_Rewards();
copy.CustomerId = this.CustomerId;
copy.RewardId = this.RewardId;
copy.RwdNumber = this.RwdNumber;
return(copy);
}
// Update object
// return indicator of success
public static bool UpdateCustomers_Reward(Customers_Rewards oldObj, Customers_Rewards newObj)
{
bool success = false; // did not update
// create connection
SqlConnection connection = TravelExperts.GetConection();
// create UPDATE command
string updateStatment =
"UPDATE Customers_Rewards SET " +
"CustomerId = @NewCustomerId, " +
"RewardId = @NewRewardId, " +
"RwdNumber = @NewRwdNumber " +
"WHERE CustomerId = @OldCustomerId " + // identifies
"AND RewardId = @OldRewardId " + // the rest - for optimistic concurrency
"AND RwdNumber = @OldRwdNumber ";
SqlCommand cmd = new SqlCommand(updateStatment, connection);
// suply perameter value
// New object Values
cmd.Parameters.AddWithValue("@NewCustomerId", newObj.CustomerId);
cmd.Parameters.AddWithValue("@NewRewardId", newObj.RewardId);
cmd.Parameters.AddWithValue("@NewRwdNumber", newObj.RwdNumber);
// ID
cmd.Parameters.AddWithValue("@OldCustomerId", oldObj.CustomerId);
// Old object Values
cmd.Parameters.AddWithValue("@OldRewardId", oldObj.RewardId);
cmd.Parameters.AddWithValue("@OldRwdNumber", oldObj.RwdNumber);
// execute the UPDATE command
try
{
// open the conection
connection.Open();
// execute the command
int count = cmd.ExecuteNonQuery();
// check if successful
if (count > 0)
{
success = true; // updated
}
}
catch (Exception ex)
{
throw ex;
}
finally // executes always
{
connection.Close();
}
// retrieve generated object ID to return
return(success);
}
// Delete object
// return indicator of success
public static bool Delete(Customers_Rewards obj)
{
bool success = false;
// create connection
SqlConnection connection = TravelExperts.GetConection();
// create DELETE command
string deleteStatment =
"DELETE FROM Customers_Rewards " +
"WHERE CustomerId = @CustomerId " + // needed for identification of object
"AND RewardId = @RewardId " + // the rest - for optimistic concurrency
"AND RwdNumber = @RwdNumber ";
SqlCommand cmd = new SqlCommand(deleteStatment, connection);
// suply perameter value
cmd.Parameters.AddWithValue("@CustomerId", obj.CustomerId);
cmd.Parameters.AddWithValue("@RewardId", obj.RewardId);
cmd.Parameters.AddWithValue("@RwdNumber", obj.RwdNumber);
// execute the command
try
{
// open the conection
connection.Open();
// execute the command
int count = cmd.ExecuteNonQuery();
// check if successful
if (count > 0)
{
success = true;
}
}
catch (Exception ex)
{
throw ex;
}
finally // executes always
{
connection.Close();
}
// retrieve generated customer nID to return
return(success);
}
// retrieve object with given ID
public static Customers_Rewards GetValue(int objID)
{
Customers_Rewards obj = null;
// create connection
SqlConnection connection = TravelExperts.GetConection();
// create SELECT command
string query =
"SELECT CustomerId, RewardId, RwdNumber " +
"FROM Customers_Rewards " +
"WHERE CustomerId = @CustomerId ";
SqlCommand cmd = new SqlCommand(query, connection);
// suply perameter value
cmd.Parameters.AddWithValue("@CustomerId", objID);
// run the SELECT query
try
{
// open the conection
connection.Open();
// run the command
SqlDataReader reader = cmd.ExecuteReader(CommandBehavior.SingleRow);
// build object object to return
if (reader.Read()) // if there is a object with this ID
{
obj = new Customers_Rewards();
obj.CustomerId = Convert.ToInt32(reader["CustomerId"]);
obj.RewardId = Convert.ToInt32(reader["RewardId"]);
obj.RwdNumber = reader["RwdNumber"].ToString();
}
reader.Close();
}
catch (Exception ex)
{
throw ex;
}
finally // executes always
{
connection.Close();
}
return(obj);
}
// insert new row to table
// return new object
public static int Add(Customers_Rewards obj)
{
int custID = 0;
// create connection
SqlConnection connection = TravelExperts.GetConection();
// create INSERT command
// CustomerID is IDENTITY so no value provided
string insertStatment =
"INSERT INTO Customers_Rewards(CustomerId, RewardId, RwdNumber) " +
"OUTPUT inserted.[CustomerId] " +
"VALUES(@CustomerId, @RewardId, @RwdNumber) ";
SqlCommand cmd = new SqlCommand(insertStatment, connection);
// suply perameter value
cmd.Parameters.AddWithValue("@CustomerId", obj.CustomerId);
cmd.Parameters.AddWithValue("@RewardId", obj.RewardId);
cmd.Parameters.AddWithValue("@RwdNumber", obj.RwdNumber);
// execute the INSERT command
try
{
// open the conection
connection.Open();
// execute insert command
custID = (int)cmd.ExecuteScalar();
}
catch (Exception ex)
{
throw ex;
}
finally // executes always
{
connection.Close();
}
// retrieve generated customer nID to return
return(custID);
}