public CarDTO GetCarDetailsByModelName(string model)
{
CarDTO result = null;
string SQL = "SELECT ID, Price, Produced_Year, Engine, Tranmission_ID, Type_ID, " +
"Category_ID, Fuel_ID FROM Cars";
if (!string.IsNullOrEmpty(model))
{
SQL = SQL + " WHERE Model_Name = @Model_Name";
}
else
{
return(null);
}
SqlConnection cnn = DBUtils.GetConnection();
SqlCommand cmd = new SqlCommand(SQL, cnn);
if (!string.IsNullOrEmpty(model))
{
cmd.Parameters.AddWithValue("@Model_Name", model);
}
try
{
if (cnn.State == ConnectionState.Closed)
{
cnn.Open();
SqlDataReader rd = cmd.ExecuteReader(CommandBehavior.CloseConnection);
Car_TranmissionDAO car_TranmissionDAO = new Car_TranmissionDAO();
Car_TypeDAO car_TypeDAO = new Car_TypeDAO();
Car_CategoryDAO car_CategoryDAO = new Car_CategoryDAO();
Car_FuelsDAO car_FuelsDAO = new Car_FuelsDAO();
Car_StatusDAO car_StatusDAO = new Car_StatusDAO();
if (rd.Read())
{
result = new CarDTO
{
ID = rd.GetInt32(0),
Price = rd.GetDouble(1),
Produced_Year = rd.GetInt32(2),
Engine = rd.GetInt32(3),
Tranmission_Description = car_TranmissionDAO.GetTranmissionDescriptionByID(rd.GetInt32(4)),
Type_Description = car_TypeDAO.GetTypeDescriptionByID(rd.GetInt32(5)),
Category_Description = car_CategoryDAO.GetCategoryDescriptionByID(rd.GetInt32(6)),
Fuel_Description = car_FuelsDAO.GetFuelDescriptionByID(rd.GetInt32(7))
};
}
}
}
catch (SqlException ex)
{
throw new Exception(ex.Message);
}
return(result);
}
public List <CarDTO> GetListCar()
{
List <CarDTO> list = null;
string SQL = "SELECT ID, Model_Name, Price, Produced_Year, Accquired_Date, Engine, Quantity, " +
"Manufacturer_ID, Tranmission_ID, Type_ID, Category_ID, Fuel_ID, Status_ID FROM Cars";
SqlConnection cnn = DBUtils.GetConnection();
SqlCommand cmd = new SqlCommand(SQL, cnn);
try
{
if (cnn.State == ConnectionState.Closed)
{
cnn.Open();
SqlDataReader rd = cmd.ExecuteReader(CommandBehavior.CloseConnection);
Car_ManufacturerDAO car_ManufacturerDAO = new Car_ManufacturerDAO();
Car_TranmissionDAO car_TranmissionDAO = new Car_TranmissionDAO();
Car_TypeDAO car_TypeDAO = new Car_TypeDAO();
Car_CategoryDAO car_CategoryDAO = new Car_CategoryDAO();
Car_FuelsDAO car_FuelsDAO = new Car_FuelsDAO();
Car_StatusDAO car_StatusDAO = new Car_StatusDAO();
while (rd.Read())
{
if (list == null)
{
list = new List <CarDTO>();
}
CarDTO carDTO = new CarDTO
{
ID = rd.GetInt32(0),
Model_Name = rd.GetString(1),
Price = rd.GetDouble(2),
Produced_Year = rd.GetInt32(3),
Accquired_Date = rd.GetDateTime(4),
Engine = rd.GetInt32(5),
Quantity = rd.GetInt32(6),
Manufacturer_Name = car_ManufacturerDAO.GetManufacturerNameByID(rd.GetInt32(7)),
Tranmission_Description = car_TranmissionDAO.GetTranmissionDescriptionByID(rd.GetInt32(8)),
Type_Description = car_TypeDAO.GetTypeDescriptionByID(rd.GetInt32(9)),
Category_Description = car_CategoryDAO.GetCategoryDescriptionByID(rd.GetInt32(10)),
Fuel_Description = car_FuelsDAO.GetFuelDescriptionByID(rd.GetInt32(11)),
Status_Description = car_StatusDAO.GetStatusDescriptionByID(rd.GetInt32(12))
};
list.Add(carDTO);
}
}
}
catch (SqlException ex)
{
throw new Exception(ex.Message);
}
return(list);
}
public List <CarDTO> Search(string manufacturer, string category, string type, double priceFrom, double priceTo)
{
List <CarDTO> list = null;
Car_ManufacturerDAO car_ManufacturerDAO = new Car_ManufacturerDAO();
Car_TranmissionDAO car_TranmissionDAO = new Car_TranmissionDAO();
Car_TypeDAO car_TypeDAO = new Car_TypeDAO();
Car_CategoryDAO car_CategoryDAO = new Car_CategoryDAO();
Car_FuelsDAO car_FuelsDAO = new Car_FuelsDAO();
Car_StatusDAO car_StatusDAO = new Car_StatusDAO();
string SQL = "SELECT ID, Model_Name, Price, Produced_Year, Accquired_Date, Engine, Quantity, " +
"Manufacturer_ID, Tranmission_ID, Type_ID, Category_ID, Fuel_ID, Status_ID FROM Cars";
if (!manufacturer.Equals("All"))
{
int manuID = car_ManufacturerDAO.GetManufacturerIDByName(manufacturer);
if (!SQL.Contains("WHERE "))
{
SQL = SQL + " WHERE Manufacturer_ID = " + manuID;
}
}
if (!category.Equals("All"))
{
int cateID = car_CategoryDAO.GetCategoryIDByDescription(category);
if (!SQL.Contains("WHERE "))
{
SQL = SQL + " WHERE Category_ID = " + cateID;
}
else
{
SQL = SQL + " AND Category_ID = " + cateID;
}
}
if (!type.Equals("All"))
{
int typeID = car_TypeDAO.GetTypeIDByDescription(type);
if (!SQL.Contains("WHERE "))
{
SQL = SQL + " WHERE Type_ID = " + typeID;
}
else
{
SQL = SQL + " AND Type_ID = " + typeID;
}
}
if (!(priceFrom == -1 && priceTo == -1))
{
if (priceFrom > -1 && priceTo > -1)
{
if (!SQL.Contains("WHERE "))
{
SQL = SQL + " WHERE Price BETWEEN " + priceFrom + " AND " + priceTo;
}
else
{
SQL = SQL + " AND Price BETWEEN " + priceFrom + " AND " + priceTo;
}
}
else if (priceFrom > -1 && priceTo == -1)
{
if (!SQL.Contains("WHERE "))
{
SQL = SQL + " WHERE Price >= " + priceFrom;
}
else
{
SQL = SQL + " AND Price >= " + priceFrom;
}
}
else if (priceFrom == -1 && priceTo > -1)
{
if (!SQL.Contains("WHERE "))
{
SQL = SQL + " WHERE Price <= " + priceTo;
}
else
{
SQL = SQL + " AND Price <= " + priceTo;
}
}
}
SqlConnection cnn = DBUtils.GetConnection();
SqlCommand cmd = new SqlCommand(SQL, cnn);
try
{
if (cnn.State == ConnectionState.Closed)
{
cnn.Open();
SqlDataReader rd = cmd.ExecuteReader(CommandBehavior.CloseConnection);
while (rd.Read())
{
if (list == null)
{
list = new List <CarDTO>();
}
CarDTO carDTO = new CarDTO
{
ID = rd.GetInt32(0),
Model_Name = rd.GetString(1),
Price = rd.GetDouble(2),
Produced_Year = rd.GetInt32(3),
Accquired_Date = rd.GetDateTime(4),
Engine = rd.GetInt32(5),
Quantity = rd.GetInt32(6),
Manufacturer_Name = car_ManufacturerDAO.GetManufacturerNameByID(rd.GetInt32(7)),
Tranmission_Description = car_TranmissionDAO.GetTranmissionDescriptionByID(rd.GetInt32(8)),
Type_Description = car_TypeDAO.GetTypeDescriptionByID(rd.GetInt32(9)),
Category_Description = car_CategoryDAO.GetCategoryDescriptionByID(rd.GetInt32(10)),
Fuel_Description = car_FuelsDAO.GetFuelDescriptionByID(rd.GetInt32(11)),
Status_Description = car_StatusDAO.GetStatusDescriptionByID(rd.GetInt32(12))
};
list.Add(carDTO);
}
}
}
catch (SqlException ex)
{
throw new Exception(ex.Message);
}
return(list);
}
public bool UpdateCar(CarDTO carDTO)
{
bool result = false;
string SQL = "UPDATE Cars SET Model_Name = @Model_Name, Price = @Price, Produced_Year = @Produced_Year, " +
"Engine = @Engine, Quantity = @Quantity, Manufacturer_ID = @Manufacturer_ID, Tranmission_ID = @Tranmission_ID, " +
"Type_ID = @Type_ID, Category_ID = @Category_ID, Fuel_ID = @Fuel_ID, Status_ID = @Status_ID " +
"WHERE ID = @ID";
SqlConnection cnn = DBUtils.GetConnection();
SqlCommand cmd = new SqlCommand(SQL, cnn);
cmd.Parameters.AddWithValue("@Model_Name", carDTO.Model_Name);
cmd.Parameters.AddWithValue("@Price", carDTO.Price);
cmd.Parameters.AddWithValue("@Produced_Year", carDTO.Produced_Year);
cmd.Parameters.AddWithValue("@Engine", carDTO.Engine);
cmd.Parameters.AddWithValue("@Quantity", carDTO.Quantity);
Car_ManufacturerDAO car_ManufacturerDAO = new Car_ManufacturerDAO();
int manuID = car_ManufacturerDAO.GetManufacturerIDByName(carDTO.Manufacturer_Name);
cmd.Parameters.AddWithValue("@Manufacturer_ID", manuID);
Car_TranmissionDAO car_TranmissionDAO = new Car_TranmissionDAO();
int tranID = car_TranmissionDAO.GetTranmissionIDByDescription(carDTO.Tranmission_Description);
cmd.Parameters.AddWithValue("@Tranmission_ID", tranID);
Car_TypeDAO car_TypeDAO = new Car_TypeDAO();
int typeID = car_TypeDAO.GetTypeIDByDescription(carDTO.Type_Description);
cmd.Parameters.AddWithValue("@Type_ID", typeID);
Car_CategoryDAO car_CategoryDAO = new Car_CategoryDAO();
int cateID = car_CategoryDAO.GetCategoryIDByDescription(carDTO.Category_Description);
cmd.Parameters.AddWithValue("@Category_ID", cateID);
Car_FuelsDAO car_FuelsDAO = new Car_FuelsDAO();
int fuelID = car_FuelsDAO.GetFuelIDByDescription(carDTO.Fuel_Description);
cmd.Parameters.AddWithValue("@Fuel_ID", fuelID);
Car_StatusDAO car_StatusDAO = new Car_StatusDAO();
int statusID = car_StatusDAO.GetStatusIDByDescription(carDTO.Status_Description);
cmd.Parameters.AddWithValue("@Status_ID", statusID);
cmd.Parameters.AddWithValue("@ID", carDTO.ID);
try
{
if (cnn.State == ConnectionState.Closed)
{
cnn.Open();
}
result = cmd.ExecuteNonQuery() > 0;
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
finally
{
if (cnn.State == ConnectionState.Open)
{
cnn.Close();
}
}
return(result);
}