kev/Drawer/UCDraw/LibTest/UCBackground.cs

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

namespace LibTest
{
    public partial class UCBackground : UserControl
    {
        public UCBackground()
        {
            InitializeComponent();
        }

        private void UCBackground_Paint(object sender, PaintEventArgs e)
        {
            Graphics g = e.Graphics;
            g.Clear(Color.White);
            Pen pen = Pens.Black;
            g.DrawLine(pen, new Point(1, 1), new Point(200, 200));
        }
    }
}