Lab9/Лаб9/Form1.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;

namespace Лаб9
{
    public partial class FArray : Form
    {
        public FArray()
        {
            InitializeComponent();
        }
        private void btnStart_Click(object sender, EventArgs e)
        {
            dataGridArray.ColumnCount = 20;
            dataGridArray.RowCount = 20;
            int[,] a = new int[20,20];
            int i,j;
            int top, bottom, left, right;
            Random rand = new Random();
            for (i=0;i<20; i++)
                for (j=0;j<20;j++)
                    a[i,j] = rand.Next(-50,50);
            for (i=0;i<20;i++)
                for (j=0;j<20;j++)
                    dataGridArray.Rows[i].Cells[j].Value = a[i,j].ToString();
            
            for (i=0;i<20;i++)
            {
                for (j = 0; j < 20; j++)
                {
                    if (i != 0)
                    {
                        top = int.Parse(dataGridArray.Rows[i - 1].Cells[j].Value.ToString());
                    } else
                    {
                        top = -100;
                    }
                    if (i != 19)
                    {
                        bottom = int.Parse(dataGridArray.Rows[i + 1].Cells[j].Value.ToString());
                    } else
                    {
                        bottom = -100;
                    }
                    if (j != 0)
                    {
                        left = int.Parse(dataGridArray.Rows[i].Cells[j - 1].Value.ToString());
                    } else
                    {
                        left = -100;
                    }
                    if (j != 19)
                    {
                        right = int.Parse(dataGridArray.Rows[i].Cells[j + 1].Value.ToString());
                    }else
                    {
                        right = -100;
                    }

                    int n = int.Parse(dataGridArray.Rows[i].Cells[j].Value.ToString());

                    if ((top == -100 || n > top) && (bottom == -100 || n > bottom) && (left == -100 || n > left) && (right == -100 || n > right))
                    {
                        dataGridArray.Rows[i].Cells[j].Style.BackColor = Color.Pink;
                    }
                }
            }
        }
    }
}