using System;

using System.Collections.Generic;

using System.Drawing;

using System.Linq;

using System.Windows.Forms;

​

namespace FileComparisonApp

{

    public partial class ComparisonForm : Form

    {

        private Record testRecord;

        private List<Record> productionRecords;

​

        public ComparisonForm(Record testRecord, List<Record> productionRecords)

        {

            this.testRecord = testRecord;

            this.productionRecords = productionRecords;

​

            InitializeComponent();

            InitializeUI();

        }

​

        private void InitializeUI()

        {

            // Form properties

            Text = "Comparison Window";

            Size = new Size(500, 300);

            StartPosition = FormStartPosition.CenterScreen;

​

            // Labels for Test and Production records

            Label lblTest = new Label { Text = "Test Record", Location = new Point(10, 10), AutoSize = true };

            Label lblProduction = new Label { Text = "Production Record", Location = new Point(250, 10), AutoSize = true };

​

            // ListBox for property comparisons

            ListView listView = new ListView

            {

                Location = new Point(10, 40),

                Size = new Size(460, 200),

                View = View.Details,

                FullRowSelect = true

            };

            listView.Columns.Add("Property", 150);

            listView.Columns.Add("Test Value", 150);

            listView.Columns.Add("Production Value", 150);

​

            // Add controls

            Controls.Add(lblTest);

            Controls.Add(lblProduction);

            Controls.Add(listView);

​

            // Compare and populate the list view

            CompareRecords(listView);

        }

​

        private void CompareRecords(ListView listView)

        {

            var matchingRecord = productionRecords.FirstOrDefault(r => r.Pan == testRecord.Pan);

​

            if (matchingRecord != null)

            {

                AddComparisonRow(listView, "Pan", testRecord.Pan, matchingRecord.Pan);

                AddComparisonRow(listView, "Property1", testRecord.Property1, matchingRecord.Property1);

                AddComparisonRow(listView, "Property2", testRecord.Property2, matchingRecord.Property2);

            }

            else

            {

                MessageBox.Show("No matching record found in Production file.");

                Close();

            }

        }

​

        private void AddComparisonRow(ListView listView, string property, string testValue, string prodValue)

        {

            var item = new ListViewItem(property);

            item.SubItems.Add(testValue);

            item.SubItems.Add(prodValue);

​

            if (testValue != prodValue)

            {

                item.UseItemStyleForSubItems = false;

                item.SubItems[1].ForeColor = Color.Red;

                item.SubItems[2].ForeColor = Color.Red;

            }

​

            listView.Items.Add(item);

        }

    }

}

​

namespace FileComparisonApp

{

    public partial class MainForm : Form

    {

        private List<string> testRecords = new List<string>();

        private List<Record> productionRecords = new List<Record>();

​

        public MainForm()

        {

            InitializeComponent();

            InitializeUI();

        }

​

        private void InitializeUI()

        {

            // Buttons for file loading

            Button btnLoadTest = new Button { Text = "Load Test File", Location = new System.Drawing.Point(10, 10), Width = 150 };

            Button btnLoadProduction = new Button { Text = "Load Production File", Location = new System.Drawing.Point(180, 10), Width = 150 };

​

            // ListBox for Test file records

            ListBox lstTestRecords = new ListBox { Location = new System.Drawing.Point(10, 50), Size = new System.Drawing.Size(320, 200) };

​

            // Event Handlers

            btnLoadTest.Click += (sender, e) => LoadTestFile(lstTestRecords);

            btnLoadProduction.Click += (sender, e) => LoadProductionFile();

            lstTestRecords.DoubleClick += (sender, e) => OpenComparisonWindow(lstTestRecords);

​

            // Add controls to the form

            Controls.Add(btnLoadTest);

            Controls.Add(btnLoadProduction);

            Controls.Add(lstTestRecords);

​

            // Form properties

            Text = "File Comparison App";

            Size = new System.Drawing.Size(360, 300);

            StartPosition = FormStartPosition.CenterScreen;

        }

​

        private void LoadTestFile(ListBox listBox)

        {

            OpenFileDialog openFileDialog = new OpenFileDialog

            {

                Filter = "Text Files (*.txt)|*.txt",

                Title = "Load Test File"

            };

​

            if (openFileDialog.ShowDialog() == DialogResult.OK)

            {

                testRecords = File.ReadAllLines(openFileDialog.FileName).ToList();

                listBox.Items.Clear();

                listBox.Items.AddRange(testRecords.ToArray());

            }

        }

​

        private void LoadProductionFile()

        {

            OpenFileDialog openFileDialog = new OpenFileDialog

            {

                Filter = "Text Files (*.txt)|*.txt",

                Title = "Load Production File"

            };

​

            if (openFileDialog.ShowDialog() == DialogResult.OK)

            {

                productionRecords = File.ReadAllLines(openFileDialog.FileName)

                                       .Select(line => Record.Parse(line))

                                       .ToList();

            }

        }

​

        private void OpenComparisonWindow(ListBox listBox)

        {

            if (listBox.SelectedItem != null && productionRecords.Any())

            {

                string selectedTestRecord = listBox.SelectedItem.ToString();

                Record testRecord = Record.Parse(selectedTestRecord);

​

                ComparisonForm comparisonForm = new ComparisonForm(testRecord, productionRecords);

                comparisonForm.ShowDialog();

            }

            else

            {

                MessageBox.Show("Please load both files and select a record to compare.");

            }

        }

    }

​

    public class Record

    {

        public string Pan { get; set; }

        public string Property1 { get; set; }

        public string Property2 { get; set; }

​

        public static Record Parse(string line)

        {

            var parts = line.Split(',');

            return new Record

            {

                Pan = parts[0],

                Property1 = parts.Length > 1 ? parts[1] : string.Empty,

                Property2 = parts.Length > 2 ? parts[2] : string.Empty

            };

        }

    }

}