Allan's Pre-test MyProperty

Below is the Property class.

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

    }
}