const string path = "clients.txt"; // located in bin/Debug folder
public static List <Client> ReadClients()
{
List <Client> clientList = new List <Client>(); //create an empty list
Client c; // for reading clients
string line; // next line from the file
string[] fields; // line broken into fields
using (FileStream fs = new FileStream(path, FileMode.OpenOrCreate, FileAccess.Read))
{
using (StreamReader sr = new StreamReader(fs))
{
while (!sr.EndOfStream)// while there is still unread data
{
line = sr.ReadLine();
fields = line.Split(',');//split where the comma's are
string Name = fields[0];
int AccountNumber = Convert.ToInt32(fields[1]);
string ClientType = fields[2];
decimal ChargeAmount = Convert.ToDecimal(fields[3]);
//create class based on client type
if (fields[2] == "r")
{
c = new Residential(Name, AccountNumber, ClientType, ChargeAmount);
}
else if (fields[2] == "c")
{
c = new Commercial(Name, AccountNumber, ClientType, ChargeAmount);
}
else
{
c = new Industrial(Name, AccountNumber, ClientType, ChargeAmount);
}
clientList.Add(c);
}
} // closes stream reader and recycles
} // closes file stream and recycles
return(clientList);
}
private void btnCalculate_Click(object sender, EventArgs e)
{
//variables
decimal kwh; //user input for kwh
decimal offkwh; //user input for off hours
string name; //class constructor value for name
int accountNumber; //class constructor value for account number
string clientType; //class constructor value for client type (residential exc)
//validate input Dec 11th
if (Validator.IsNonNegativeInt32(txtUseage, "KWH") &&
Validator.IsPresent(txtUseage, "KWH") &&
Validator.IsNonNegativeInt32(txtAccountNo, "Account Number") &&
Validator.IsPresent(txtAccountNo, "Account Number") &&
Validator.IsPresent(txtClientName, "Client Name")
)
{
//allocate values from text boxes
kwh = Convert.ToDecimal(txtUseage.Text); //taking user input for kwh
accountNumber = Convert.ToInt32(txtAccountNo.Text);
name = txtClientName.Text;
//calculate residential rate
if (btnResidential.Checked == true)
{
clientType = "r";
Residential r = new Residential(name, accountNumber, clientType);
lblBillTotal.Text = (r.CalculateBill(kwh)).ToString("c");
//add it to the list
r.ChargeAmount = (r.CalculateBill(kwh));
clients.Add(r);
DisplayClients();
}
//calculate commercial rate
else if (btnCommercial.Checked == true)
{
clientType = "c";
Commercial c = new Commercial(name, accountNumber, clientType);
lblBillTotal.Text = (c.CalculateBill(kwh)).ToString("c");
//add it to the list
c.ChargeAmount = (c.CalculateBill(kwh));
clients.Add(c);
DisplayClients();
}
else
{
//calculate industrial peak rate
//validate off hours Dec 11th
if (Validator.IsNonNegativeInt32(txtOffHours, "Off hours") &&
Validator.IsPresent(txtOffHours, "Off hours"))
{
//calculate off hours, add peak hours and add client to list
clientType = "i";
offkwh = Convert.ToDecimal(txtOffHours.Text); //taking user input for off hours
Industrial i = new Industrial(name, accountNumber, clientType);
lblBillTotal.Text = (i.CalculateBill(kwh, offkwh)).ToString("c");
//add it to the list
i.ChargeAmount = (i.CalculateBill(kwh, offkwh));
clients.Add(i);
DisplayClients();
}
}
}
}