up/Учебная практика 37 гр. 2 сем. - 3/Плиточный интерфейс/Плитки множественное выделение/Агенты/MainForm.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.SqlClient;

namespace Агенты
{
    public partial class MainForm : Form
    {
        public MainForm()
        {
            InitializeComponent();
        }

        class ItemPanel : Panel
        {
            public System.Windows.Forms.Label LblPhone;
            public System.Windows.Forms.Label LblTitle;
            public System.Windows.Forms.Label LblAddress;
            public System.Windows.Forms.PictureBox PbxImage;
            public bool IsSelected;  // является ли плитка выделенной

            public ItemPanel()
            {
                this.PbxImage = new System.Windows.Forms.PictureBox();
                this.LblAddress = new System.Windows.Forms.Label();
                this.LblTitle = new System.Windows.Forms.Label();
                this.LblPhone = new System.Windows.Forms.Label();

                // 
                // panel1
                // 
                this.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
                | System.Windows.Forms.AnchorStyles.Left)
                | System.Windows.Forms.AnchorStyles.Right)));
                this.BackColor = System.Drawing.Color.White;
                this.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
                this.Controls.Add(this.LblPhone);
                this.Controls.Add(this.LblTitle);
                this.Controls.Add(this.LblAddress);
                this.Controls.Add(this.PbxImage);
                this.Location = new System.Drawing.Point(33, 35);
                this.Name = "panel1";
                this.Size = new System.Drawing.Size(872, 172);
                this.TabIndex = 0;
                // 
                // PbxImage
                // 
                this.PbxImage.Location = new System.Drawing.Point(4, 4);
                this.PbxImage.Name = "PbxImage";
                this.PbxImage.Size = new System.Drawing.Size(138, 122);
                this.PbxImage.SizeMode = System.Windows.Forms.PictureBoxSizeMode.Zoom;
                this.PbxImage.TabIndex = 0;
                this.PbxImage.TabStop = false;
                // 
                // LblAddress
                // 
                this.LblAddress.AutoSize = true;
                this.LblAddress.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(204)));
                this.LblAddress.Location = new System.Drawing.Point(4, 133);
                this.LblAddress.Name = "LblAddress";
                this.LblAddress.Size = new System.Drawing.Size(64, 25);
                this.LblAddress.TabIndex = 1;
                this.LblAddress.Text = "label1";
                // 
                // LblTitle
                // 
                this.LblTitle.AutoSize = true;
                this.LblTitle.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(204)));
                this.LblTitle.Location = new System.Drawing.Point(152, 4);
                this.LblTitle.Name = "LblTitle";
                this.LblTitle.Size = new System.Drawing.Size(64, 25);
                this.LblTitle.TabIndex = 2;
                this.LblTitle.Text = "label2";
                // 
                // LblPhone
                // 
                this.LblPhone.AutoSize = true;
                this.LblPhone.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(204)));
                this.LblPhone.Location = new System.Drawing.Point(152, 55);
                this.LblPhone.Name = "LblPhone";
                this.LblPhone.Size = new System.Drawing.Size(64, 25);
                this.LblPhone.TabIndex = 3;
                this.LblPhone.Text = "label3";
            }
        }

        string TxtCon = @"Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=|DataDirectory|\agent1.mdf;Integrated Security=True;Connect Timeout=30";

        struct Agent
        {
            // название, адрес, телефон, логотип
            public string Title, Address, Phone, Logo;
        }

        List<Agent> LstAgent = new List<Agent>();

        void GetDateFromDB()
        {
            SqlConnection Con = new SqlConnection(TxtCon);
            Con.Open();

            string TxtQuery = "SELECT Title, Address, Phone, Logo FROM Agent";
            SqlCommand Query = new SqlCommand(TxtQuery, Con);
            SqlDataReader Res = Query.ExecuteReader();

            LstAgent.Clear();
            while (Res.Read())
            {
                Agent Agent1 = new Agent();
                Agent1.Title = Res["Title"].ToString();  // название
                Agent1.Address = Res["Address"].ToString();  // адрес
                Agent1.Phone = Res["Phone"].ToString();  // телефон
                Agent1.Logo = Res["Logo"].ToString();  // логотип
                LstAgent.Add(Agent1);
            }
            Con.Close();
        }

        void FillPanel()
        {
            MainPanel.Controls.Clear();
            // перебор агентов
            for(int i = 0; i <= LstAgent.Count-1; i++)
            {
                ItemPanel Item = new ItemPanel();
                Item.LblTitle.Text = LstAgent[i].Title;
                Item.LblPhone.Text = LstAgent[i].Phone;
                Item.LblAddress.Text = LstAgent[i].Address;
                try
                {
                    Item.PbxImage.Image = Image.FromFile(Application.StartupPath + LstAgent[i].Logo);
                }
                catch
                {
                    Item.PbxImage.Image = Image.FromFile(Application.StartupPath + "\\agents\\picture.png");
                }

                Item.Click += Item_Click;  // щелчок на панели
                Item.PbxImage.Click += Object_Click;
                Item.LblAddress.Click += Object_Click;
                Item.LblPhone.Click += Object_Click;
                Item.LblTitle.Click += Object_Click;

                MainPanel.Controls.Add(Item);  // добавить плитку на панель
            }
        }

        private void Object_Click(object sender, EventArgs e)
        {
            // плитка, на которой находится объект, на котором выполнили щелчок
            ItemPanel CurrentItem = (sender as Control).Parent as ItemPanel;
            Item_Click(CurrentItem, e);
        }

        private void Item_Click(object sender, EventArgs e)
        {
            ItemPanel CurrentItem = sender as ItemPanel;  // текущая плитка
            if (CurrentItem.IsSelected)  // если плитка выделена
            {
                CurrentItem.BackColor = Color.White;  // снять выделение
                CurrentItem.IsSelected = false;
            }
            else  // если плитка не выделена
            {
                CurrentItem.BackColor = Color.LightGreen;  // выделить плитку
                CurrentItem.IsSelected = true;
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            GetDateFromDB();
            FillPanel();
        }
    }
}