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using System;
using System;
using System.Drawing;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
using System.Linq;
using System.Collections.Generic;
 
 
//pb[i].Image = Image.FromFile("C:\\Users\\4\\source\\repos\\WindowsFormsApp\\WindowsFormsApp\\cat.bmp");
 
class Sample : Form
{
    private Image img;
 
 
    public static void Main()
    {
        Application.Run(new Sample());
    }
 
    public Sample()
    {
        this.Text = "Sample";
        this.Width = 700; this.Height = 700;
        this.BackColor = Color.MintCream;
 
 
        img = Image.FromFile("C:\\Users\\4\\source\\repos\\WindowsFormsApp\\WindowsFormsApp\\cat.bmp");
 
        this.Paint += new PaintEventHandler(fm_Paint);
    }
 
    public void fm_Paint(object sender,PaintEventArgs e)
    {
        Graphics g = e.Graphics;
        GraphicsPath gp = new GraphicsPath();
 
        gp.AddEllipse(new Rectangle(0, 0, 400, 300));
        Region rg = new Region(gp);
        g.Clip = rg;
 
        g.DrawImage(img, 0, 0, 700, 700);
    }
}

prog.cs(2,1): warning CS0105: The using directive for `System' appeared previously in this namespace
prog.cs(4,22): error CS0234: The type or namespace name `Forms' does not exist in the namespace `System.Windows'. Are you missing `System.Windows.Forms' assembly reference?
prog.cs(12,16): error CS0246: The type or namespace name `Form' could not be found. Are you missing an assembly reference?
prog.cs(34,40): error CS0246: The type or namespace name `PaintEventArgs' could not be found. Are you missing an assembly reference?
Compilation failed: 3 error(s), 1 warnings

Standard output is empty