c#winformpicturebox 的形状怎样变成圆形?

Question

c#winformpicturebox 的形状怎样变成圆形

Answer 1

代码：

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

//要引用的内容
using System.Drawing.Drawing2D;

namespace ShortMessageEntity
{
    public partial class Form3 : Form
    {
        public Form3()
        {
            InitializeComponent();
        }

        private void Form3_Load(object sender, EventArgs e)
        {
            GraphicsPath gp = new GraphicsPath();
            gp.AddEllipse(pictureBox1.ClientRectangle);
            Region region = new Region(gp);
            pictureBox1.Region = region;
            gp.Dispose();
            region.Dispose();
        }
    }
}

效果截图：