/// <summary>
/// filters database by the clsCustomer in argument as reference. Uses id, name and email. If you get the wrong output try using fewer arguments (id and email are unique!)
/// </summary>
/// <param name="reference">a clsCustomer class with desired search parameters</param>
/// <returns>A clsCustomer class with the database row's attributes (or id -1 if none found)</returns>
public clsCustomer filterCustomer(clsCustomer reference)
{
// creates new instance of clsCustomer called aCustomer
clsCustomer aCustomer = new clsCustomer();
// creates new instance of dataBase connection
clsDataConnection DB = new clsDataConnection();
// checks which attributes are set in the reference clsCustomer class (as mentioned in this classes documentation)
if (reference.cusId > 0 || reference.cusName != "" || reference.cusEmail != "")
{
// create a temp counter to check a result is found (0 if not found)
int tempCounter = 0;
// check cusId is not empty (-1 is default value so must be set before being used - DB starts at id 10,000)
if (reference.cusId > 0)
{
// adds parameter and executes stored procedure
DB.AddParameter("@uId", reference.cusId);
DB.Execute("tblCustomerFilterId");
//checks for db output
if (DB.Count == 1)
{
// sets all attributes to retrieved database variables
aCustomer.cusId = Convert.ToInt32(DB.DataTable.Rows[0]["u_id"]);
aCustomer.cusName = Convert.ToString(DB.DataTable.Rows[0]["u_name"]);
aCustomer.cusEmail = Convert.ToString(DB.DataTable.Rows[0]["u_email"]);
aCustomer.cusPassword = Convert.ToString(DB.DataTable.Rows[0]["u_password"]);
aCustomer.cusDateRegister = Convert.ToDateTime(DB.DataTable.Rows[0]["u_creation_date"]);
aCustomer.cusAccountStatus = Convert.ToBoolean(DB.DataTable.Rows[0]["u_status"]);
// increment counter if row is found
tempCounter++;
}
}
// check cusName is not empty (default cusName = "")
if (reference.cusName != "")
{
// adds parameter and executes stored procedure
DB.AddParameter("@uName", reference.cusName);
DB.Execute("tblCustomerFilterId");
// checks for db output
if (DB.Count == 1)
{
// sets all attributes to retrieved database variables
aCustomer.cusId = Convert.ToInt32(DB.DataTable.Rows[0]["u_id"]);
aCustomer.cusName = Convert.ToString(DB.DataTable.Rows[0]["u_name"]);
aCustomer.cusEmail = Convert.ToString(DB.DataTable.Rows[0]["u_email"]);
aCustomer.cusPassword = Convert.ToString(DB.DataTable.Rows[0]["u_password"]);
aCustomer.cusDateRegister = Convert.ToDateTime(DB.DataTable.Rows[0]["u_creation_date"]);
aCustomer.cusAccountStatus = Convert.ToBoolean(DB.DataTable.Rows[0]["u_status"]);
// increment counter if row is found
tempCounter++;
}
}
// checks cusEmail is not empty (default cusEmail = "")
if (reference.cusEmail != "")
{
// adds parameter and executes stored procedure
DB.AddParameter("@uEmail", reference.cusEmail);
DB.Execute("tblCustomerFilterEmail");
// checks for db output
if (DB.Count == 1)
{
// sets all attributes to retrieved database variables
aCustomer.cusId = Convert.ToInt32(DB.DataTable.Rows[0]["u_id"]);
aCustomer.cusName = Convert.ToString(DB.DataTable.Rows[0]["u_name"]);
aCustomer.cusEmail = Convert.ToString(DB.DataTable.Rows[0]["u_email"]);
aCustomer.cusPassword = Convert.ToString(DB.DataTable.Rows[0]["u_password"]);
aCustomer.cusDateRegister = Convert.ToDateTime(DB.DataTable.Rows[0]["u_creation_date"]);
aCustomer.cusAccountStatus = Convert.ToBoolean(DB.DataTable.Rows[0]["u_status"]);
// increment counter if row is found
tempCounter++;
}
}
// Check the counter to make sure that at least 1 match was found and returns new populated clsCustomer class
if (tempCounter > 0)
{
return(aCustomer);
}
// if tempCounter is empty return a dummy clsCustomer class with cusId = -1
else
{
clsCustomer noCustomer = new clsCustomer();
noCustomer.cusId = -1;
return(noCustomer);
}
}
// if cusId, cusName and cusEmail are not set then return a dummy clsCustomer class with cusId = -1
else
{
clsCustomer noCustomer = new clsCustomer();
noCustomer.cusId = -1;
return(noCustomer);
}
}
/// <summary>
/// A local add method for adding a customer class to the list (for offline)
/// </summary>
/// <param name="customer">clsCustomer class</param>
public void add(clsCustomer customer)
{
mCustomerList.Add(customer);
}