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How to refer to a list item later in program in C#?

I'm really confused here. I'm trying to figure out how I can print out the station name and the contact name in another method. Nothing I try is working...

Here's what I have to setup the class and the list....

public class WeatherStation
{
private string temperature;
private string stationDesignation;
private string contactName;

public WeatherStation(string StationDesignation, string ContactName)
{
stationDesignation = StationDesignation;
contactName = ContactName;
}

public void setStation(string StationDesignation) { stationDesignation = StationDesignation; }
public void setContact(string ContactName) { contactName = ContactName; }

public string getStation() { return stationDesignation; }
public string getContact() { return contactName; }

}

class WeatherStationList
{

private List<WeatherStation> StationList; //First, we need a List object variable...

public WeatherStationList() //...then a default constructor...
{

StationList = new List<WeatherStation>(); //create a List object for WeatherStation...

}

public void Add(string StationDesignation, string ContactName)
{

StationList.Add(new WeatherStation(StationDesignation, ContactName));

}
}

.......................................................................

And here's the method. What I want to do is print out something like WeatherStationList.StationDesignation but I can't figure out what I'm doing wrong.

public void Fill()
{
Console.WriteLine("Enter reported temperatures...");
Console.WriteLine("\n");
for (tempCount = 0; tempCount < MaxSize; tempCount++)
{
Console.Write(WeatherStation.StationList.Count[tempCount]);
Console.WriteLine("\n");
Console.Write(WeatherStationList.ContactName[tempCount]);
Console.WriteLine("\n");
Console.WriteLine("Enter Temperature:");

Any help?

Thanks,
MH

milindsm

Try this,

Console.Write(WeatherStationList[tempCount].StationDesignation) ;
Console.WriteLine("\n");
Console.Write(WeatherStationList[tempCount].ContactName);

MHenry

ASKER

that shows WeatherStationList is a type but is used like a variable.

milindsm

Oh ...my bad.... try this

Console.Write(StationList[tempCount].StationDesignation) ;
Console.WriteLine("\n");
Console.Write(StationList[tempCount].ContactName);

I hope fill method is a member of WeatherStationList class

MHenry

ASKER

That throws StationList does not exist in the current context.

I know I'm doing something wrong, just don't know what it is...

The WeatherStationList class is this:

class WeatherStationList
{

private List<WeatherStation> StationList; //First, we need a List object variable...

public WeatherStationList() //...then a default constructor...
{

StationList = new List<WeatherStation>(); //create a List object for WeatherStation...

}

public void Add(string StationDesignation, string ContactName)
{

StationList.Add(new WeatherStation(StationDesignation, ContactName));

}

milindsm

Can you just paste a complete code if possible????

milindsm

If Fill is a method outside your class then it will throw an error because StationList is a private member...

milindsm

What is the MaxSize value in For loop BTW??? How did u arrive at this value???

MHenry

ASKER

It's not finished, I'm stuck on this part so it's really ugly...

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Project2
{

public class PollenCountTemp
{
private string temperature, lowPollenCount, highPollenCount, pollenAverage;

public PollenCountTemp(string Temperature, string LowPollenCount, string HighPollenCount, string PollenAverage)
{
temperature = Temperature;
lowPollenCount = LowPollenCount;
highPollenCount = HighPollenCount;
pollenAverage = PollenAverage;
}

public void setTemp(string Temperature) { temperature = Temperature; }
public void setLow(string LowPollenCount) { lowPollenCount = LowPollenCount; }
public void setHigh(string HighPollenCount) {highPollenCount = HighPollenCount;}
public void setAvg(string PollenAverage) { pollenAverage = PollenAverage; }

public string getTemp() { return temperature; }
public string getLow() { return lowPollenCount; }
public string getHigh() {return highPollenCount;}
public string getAvg() { return pollenAverage; }

}

//setup the Pollen/Temperature List
class PollenCountTempList
{

private List<PollenCountTemp> PollenTempList;

public PollenCountTempList() // default constructor...
{

PollenTempList = new List<PollenCountTemp>(); //create a List object for WeatherStation...

}

public void Add(string Temperature, string LowPollenCount, string HighPollenCount, string PollenAverage)
{

PollenTempList.Add(new PollenCountTemp(Temperature, LowPollenCount, HighPollenCount, PollenAverage));

}
}

public class WeatherStation
{
private string temperature;
private string stationDesignation;
private string contactName;

public WeatherStation(string StationDesignation, string ContactName)
{
stationDesignation = StationDesignation;
contactName = ContactName;
}

public void setStation(string StationDesignation) { stationDesignation = StationDesignation; }
public void setContact(string ContactName) { contactName = ContactName; }

public string getStation() { return stationDesignation; }
public string getContact() { return contactName; }
}

class WeatherStationList
{

private List<WeatherStation> StationList;

public WeatherStationList() // default constructor...
{

StationList = new List<WeatherStation>(); //create a List object for WeatherStation...

}

public void Add(string StationDesignation, string ContactName)
{

StationList.Add(new WeatherStation(StationDesignation, ContactName));

}

}

//The UI

class Program

{

static void Main(string[] args)

{

new WeatherStationUI(); //Jump start it...

}

}

class WeatherStationUI
{
private WeatherStationList Collection = new WeatherStationList();
private PollenCountTempList PollenTempCollection = new PollenCountTempList();

public WeatherStationUI()
{
string Command;

while (true) //Define a command loop
{

Menu();

Command = (Console.ReadLine());

if (Command == "Quit") //Do it!

break;

else if (Command == "Post Temperatures")
{
Fill();
}

else if (Command == "Add Stations")
{

AddStation();

}

else if (Command == "Daily Report")
{
Show();
}

else if (Command == "High-Low Report")
{
HighLow();
}

else if (Command == "Daily Pollen Count")
{
Console.WriteLine("NSG Daily Pollen Report");
Console.WriteLine("================================================");

PollenCountReport();
}

else
{

Console.WriteLine("========NSG Temperature Data Report========");

HighLow();
}
}
}

public static void Menu()
{
Console.WriteLine("\n");
Console.WriteLine("Choices.................");
Console.WriteLine("\n");
Console.WriteLine("---------------------------");
Console.WriteLine("\n");
Console.WriteLine("\tAdd Stations");
Console.WriteLine("\tPost Temperatures");
Console.WriteLine("\tDaily Report");
Console.WriteLine("\tHigh-Low Report");
Console.WriteLine("\tDaily Pollen Count");
Console.WriteLine("\tQuit");
Console.WriteLine("\n");
Console.WriteLine("---------------------------");
Console.WriteLine("\n");
Console.WriteLine("Enter Command:");
Console.WriteLine("\n");
Console.WriteLine("---------------------------");
}

// Adding new stations

public void AddStation()
{
int tempCount = 0;
int MaxSize = 8;
string StationDesignation, ContactName;

Console.WriteLine("\n");
Console.WriteLine("Enter Station Information Below, stop To Quit");

for (tempCount = 0; tempCount < MaxSize; tempCount++)
{
Console.WriteLine("\n");
Console.WriteLine("Enter Weather Station Designation:");

//get Station Designation

StationDesignation = Console.ReadLine();

if (StationDesignation.Equals("Stop"))

break;

//get contact name

Console.WriteLine("\n");
Console.WriteLine("Enter Contact Person:");
ContactName = Console.ReadLine();
if (ContactName.Equals("Stop"))

break;

//add to collection

Collection.Add(StationDesignation, ContactName);

Console.WriteLine("---------------------------");
Console.WriteLine("---------------------------");
}
}

public void Fill()
{
int tempCount = 0; // loop counter for entered values
double meanTempF = 0;
double meanTempC = 0;
double meanTempFinalF = 0;
double meanTempFinalC = 0;
double pollenAverage = 0;
double temperatureDouble = 0;
double pollenLow = 0;
double pollenHigh = 0;
int MaxSize = 8;

string getPollenHigh; //pollen high count
string getPollenLow; // pollen low count
string Temperature, LowPollenCount, HighPollenCount, PollenAverage;

//setup variables for gathering information
//Start gathering info from user

Console.WriteLine("Enter reported temperatures...");
Console.WriteLine("\n");
for (tempCount = 0; tempCount < MaxSize; tempCount++)
{
Console.Write(StationList[tempCount].StationDesignation);
Console.WriteLine("\n");
Console.Write(WeatherStationList.ContactName[tempCount]);
Console.WriteLine("\n");
Console.WriteLine("Enter Temperature:");

Temperature = Console.ReadLine(); // Get string from user
if (Temperature.Equals("Stop"))

break;
else
{

Console.WriteLine("\n");
Console.WriteLine("Enter Pollen Count:");
Console.WriteLine("\n");
Console.WriteLine("Enter Pollen High:");
HighPollenCount = Console.ReadLine();
if (HighPollenCount.Equals("stop"))
break;

Console.WriteLine("\n");
Console.WriteLine("Enter Pollen Low:");
LowPollenCount = Console.ReadLine();
if (LowPollenCount.Equals("stop"))
break;

// Convert it to a number...
temperatureDouble = (double.Parse(Temperature));

// get Pollen high count

// convert to double
pollenHigh = double.Parse(HighPollenCount);

// get Pollen low count

// convert to double

pollenLow = double.Parse(LowPollenCount);

pollenAverage = (pollenLow + pollenHigh) / 2;

pollenAverage.ToString = PollenAverage;

// ...compute the Celsius values and store in the wsCelsius array...

wsCelsius[tempCount] = ((wsTemps[tempCount]) - 32) / 9;

//might as well get the mean temperatures while we're here

meanTempF = meanTempF + wsTemps[tempCount];
meanTempC = meanTempC + wsCelsius[tempCount];

// Calculate the Mean Temp. Use tempCount. It has the total number of temperatues entered. Remeber to subtract one for the "Stop".

meanTempFinalF = (meanTempF / tempCount);
meanTempFinalC = (meanTempC / tempCount);

PollenTempCollection.Add(Temperature, LowPollenCount, HighPollenCount, PollenAverage);

Console.WriteLine("\n");
Console.WriteLine("==============================================");
}
}
}

//Create Report

public static void Show()
{

Console.WriteLine("---------------------------");
Console.WriteLine("\n");
Console.WriteLine("=============NSG Temperature Data Report===============");
Console.WriteLine("\n");
Console.WriteLine("\t Fahrenheit Celsius");

for (tempCount = 0; tempCount < MaxSize; tempCount++)
{

Console.WriteLine("\n");
Console.WriteLine("-------------------------------------------");
Console.WriteLine("\n");
Console.WriteLine(wsDesignation[tempCount] + "\t " + wsTemps[tempCount].ToString("n1") + "\t " + wsCelsius[tempCount].ToString("n2"));
Console.WriteLine("\n");
Console.WriteLine("-------------------------------------------");
Console.WriteLine("\n");
}
}

//setup the Pollen Report

public static void PollenCountReport()
{
for (tempCount = 0; tempCount < MaxSize; tempCount++)
{

Console.WriteLine("\n");
Console.WriteLine("-------------------------------------------");
Console.WriteLine("\n");
Console.WriteLine(wsDesignation[tempCount] + "\t " + wsPollen[tempCount]);
Console.WriteLine("\n");
Console.WriteLine("-------------------------------------------");
Console.WriteLine("\n");
}

}

//sort for high and low temp

public static void HighLow()
{

int J, K;
int C, D;

double Buffer;
double BufferCelsius;

//sort fahrenheit

for (J = 0; J < tempCount; J++)

for (K = 0; K < tempCount - 1; K++)

if (wsTemps[K].CompareTo(wsTemps[K + 1]) > 0) //Check to see if the current
{ //element is larger than the next...if so...

Buffer = wsTemps[K]; //Swap them...

wsTemps[K] = wsTemps[K + 1];

wsTemps[K + 1] = Buffer;

}

//sort celsius

for (C = 0; C < tempCount; C++)

for (D = 0; D < tempCount - 1; D++)

if (wsCelsius[D].CompareTo(wsCelsius[D + 1]) > 0) //Check to see if the current
{ //element is larger than the next...if so...

BufferCelsius = wsCelsius[D]; //Swap them...

wsCelsius[D] = wsCelsius[D + 1];

wsCelsius[D + 1] = BufferCelsius;

}

Console.WriteLine("---------------------------");
Console.WriteLine("\n");
Console.WriteLine("=================================NSG Temperature Data Report===================");
Console.WriteLine("\n");
Console.WriteLine(" Fahrenheit Celsius");
Console.WriteLine("\n");
Console.WriteLine("Lowest Temperature: " + wsTemps[tempCount].ToString("n1") + " " + wsCelsius[0].ToString("n2"));
Console.WriteLine("\n");
Console.WriteLine("-------------------------------------------------------------------------------");
Console.WriteLine("\n");
Console.WriteLine("Highest Temperature: " + wsTemps[0].ToString("n1") + " " + wsCelsius[tempCount].ToString("n2"));
Console.WriteLine("\n");
Console.WriteLine("-------------------------------------------------------------------------------");
Console.WriteLine("\n");
Console.WriteLine(" ==============================End Temperature Data Report=====================");
}
}
}

milindsm

Dude...!!! Fill is not a member of any class..... and StationList is a private member you can't directly access it...!!! And BTW, where are you creating an object of WeatherStationList ?????

I tried compiling your code and I would suggest you write your code step-by-step. Don't try to write everything in one shot...!!!!!

MHenry

ASKER

and if I understood any of that, I'd be in a lot better shape...

I'm trying to learn this stuff. I don't understand why StationList is a private member? This encapsulation stuff is kicking my butt.

Why go through all the trouble of setting up this if it's private? I thought the public WeatherStationList part made it public?

I'm so confused...

class WeatherStationList
{

private List<WeatherStation> StationList;

public WeatherStationList() // default constructor...
{

StationList = new List<WeatherStation>(); //create a List object for WeatherStation...

}

public void Add(string StationDesignation, string ContactName)
{

StationList.Add(new WeatherStation(StationDesignation, ContactName));

}

}

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milindsm

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MHenry

ASKER

Thanks. As you can see, I'm floundering here. Trying to understand all the ins and outs is really frustrating.

milindsm

I don't see declaration of wsCelsius anywhere?????!!!!!!

MHenry

ASKER

Haven't gotten that far yet. I was stuck at this point. I've been working on this for about four hours. I finally gave up and posted here.

I'm too old to learn new crap...

milindsm

no issues... just develop your code step-by-step otherwise it becomes messy and very difficult for a developer to sort out the issues..... :)