using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace BASIC
{
public class MyProperty
{
//fields
private string suburb;
private int bedrooms;
private int price;
//properties
public string Suburb
{
get { return suburb; }
set { suburb = value; }
}
public int Bedrooms
{
get { return bedrooms; }
set { bedrooms = value; }
}
public int Price
{
get { return price; }
set { price = value; }
}
//constructors
public MyProperty()
{
}
public MyProperty(string _suburb, int _bedrooms, int _price)
{
this.suburb = _suburb;
this.bedrooms = _bedrooms;
this.price = _price;
}
//methods
//override ToString() method
public override string ToString()
{
string msg = "";
msg = suburb.ToString() + ", " + bedrooms.ToString() + ", " + price.ToString() + "\n";
return msg;
}
}
}
Below is the form class:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace BASIC
{
public partial class Form1 : Form
{
//fields
private MyProperty[] propertyArray = new MyProperty[10];
//properties
public MyProperty[] PropertyArray
{
get { return propertyArray; }
set { propertyArray = value; }
}
//constructors
public Form1()
{
InitializeComponent();
}
#region methods
//methods
//check for valid fields
public bool checkAllFields()
{
try
{
if ((txtSuburb.Text != "") && (txtPrice.Text != "") && (txtBedrooms.Text != "") ) //check for empty fields
{
int testInt = int.Parse(txtPrice.Text);
testInt = int.Parse(txtBedrooms.Text); //if cannot parse, goto catch section and handle error
return true;
}
else
{
return false; //error occurred
}
}
catch
{
return false; //error occurred
}
}
//adds property
public bool addProperty(MyProperty propObj)
{
for (int i = 0; i < propertyArray.Length; i++)
{
if (propertyArray[i] == null)
{
propertyArray[i] = propObj;
return true;
}
}
return false;
}
//updates property
public bool updateProperty(MyProperty updatedObj)
{
for (int i = 0; i < PropertyArray.Length; i++)
{
if ((propertyArray[i] != null) && (propertyArray[i].Suburb == updatedObj.Suburb) && (propertyArray[i].Bedrooms == updatedObj.Bedrooms))
{
propertyArray[i] = updatedObj;
return true;
}
}
return false; //cannot find object
}
//delete property
public bool deleteProperty(string propName)
{
for (int i = 0; i < propertyArray.Length; i++)
{
if ((propertyArray[i].Suburb == propName) && (propertyArray[i] != null))
{
propertyArray[i] = null;
return true;
}
}
return false; //object not found
}
//get sum
public double getSum()
{
double sum = 0;
for (int i = 0; i < propertyArray.Length; i++)
{
if (propertyArray[i] != null)
{
sum += propertyArray[i].Price;
}
}
return sum;
}
//get average
public double getAverage()
{
double sum = 0;
double propitem = 0;
for (int i = 0; i < propertyArray.Length; i++)
{
if (propertyArray[i] != null)
{
sum += propertyArray[i].Price;
propitem++;
}
}
return (sum/propitem);//average
}
//get max
public double getMax()
{
double dMax = 0;
for (int i = 0; i < propertyArray.Length; i++)
{
if (propertyArray[i] != null)
{
if (propertyArray[i].Price >= dMax)
dMax = propertyArray[i].Price;
}
}
return (dMax);//Max
}
//get min
public double getMin()
{
bool arrayExist = false;
double dMin = 999999999;
for (int i = 0; i < propertyArray.Length; i++)
{
if (propertyArray[i] != null)
{
if (propertyArray[i].Price <= dMin)
dMin = propertyArray[i].Price;
arrayExist = true;
}
}
if (arrayExist == true)
{
return (dMin);//Min
}
else
{
return 0;
}
}
public void clearAllFields()
{
txtBedrooms.Text = "";
txtPrice.Text = "";
txtSuburb.Text = "";
}
#endregion
#region events
private void Form1_Load(object sender, EventArgs e)
{
}
private void addNewPropertyToolStripMenuItem_Click(object sender, EventArgs e)
{
if (checkAllFields() == true)
{
MyProperty propObj = new MyProperty();
propObj.Suburb = txtSuburb.Text;
propObj.Bedrooms = int.Parse(txtBedrooms.Text);
propObj.Price = int.Parse(txtPrice.Text);
bool bool_add = addProperty(propObj);
if (bool_add == true)
{
MessageBox.Show("Property added!");
clearAllFields(); //clears fields
}
else
{
MessageBox.Show("No more property can be stored in the array");
}
}
else
{
MessageBox.Show("Fields are not valid");
}
}
private void updatePropertyToolStripMenuItem_Click(object sender, EventArgs e)
{
if (checkAllFields() == true)
{
MyProperty updateProp = new MyProperty();
updateProp.Suburb = txtSuburb.Text;
updateProp.Price = int.Parse(txtPrice.Text);
updateProp.Bedrooms = int.Parse(txtBedrooms.Text);
if (updateProperty(updateProp)) //true
{
MessageBox.Show("Property updated!");
clearAllFields(); //clears fields
}
else //false
{
MessageBox.Show("Cannot find property for update!");
}
}
else
{
MessageBox.Show("Fields are not valid");
}
}
private void deletePropertyToolStripMenuItem_Click(object sender, EventArgs e)
{
bool deleteProp;
if (txtSuburb.Text != "")
{
deleteProp = deleteProperty(txtSuburb.Text);
if (deleteProp == true)
{
MessageBox.Show("Property deleted!");
clearAllFields(); //clears fields
}
else
{
MessageBox.Show("Cannot find property to delete");
}
}
else
{
MessageBox.Show("Please enter a Suburb name");
txtSuburb.Focus();
}
}
private void displayPropertiesToolStripMenuItem_Click(object sender, EventArgs e)
{
string allPropList = "";
for (int i = 0; i < propertyArray.Length; i++)
{
if (propertyArray[i] != null)
{
allPropList += propertyArray[i].ToString();
}
}
if (allPropList == "")
{
MessageBox.Show("No property found");
}
else
{
MessageBox.Show(allPropList);
}
}
private void exitToolStripMenuItem_Click(object sender, EventArgs e)
{
Close();
}
private void aboutToolStripMenuItem_Click(object sender, EventArgs e)
{
MessageBox.Show("Property Application. Pre-test example");
}
private void displayTotalToolStripMenuItem_Click(object sender, EventArgs e)
{
double sum = getSum();
MessageBox.Show("Total Property Price : $ " + sum.ToString());
}
private void displayAverageToolStripMenuItem_Click(object sender, EventArgs e)
{
double average = getAverage();
MessageBox.Show("Total Average Price : $ " + average.ToString());
}
private void displayMaxToolStripMenuItem_Click(object sender, EventArgs e)
{
double max = getMax();
MessageBox.Show("Max Price : $ " + max.ToString());
}
private void displayMinToolStripMenuItem_Click(object sender, EventArgs e)
{
double min = getMin();
MessageBox.Show("Min Price : $ " + min.ToString());
}
#endregion
}
}
