YchPr1/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 Praktika
{
    public partial class Form1 : Form
    {
        Point moveStart;
        public Form1()
        {

            InitializeComponent();
          
        }  
        private void Form1_Load(object sender, EventArgs e)
        {
            Button helloButton = new Button();
            helloButton.BackColor = Color.LightGray;
            helloButton.ForeColor = Color.DarkGray;
            helloButton.Location = new Point(10, 10);
            helloButton.Text = "Привет";
            this.Controls.Add(helloButton);
           // this.Controls.Remove(helloButton);
        }

        
       

    }
}