用C#怎么实现图片的本地打开 并能进行放大缩小

Question

初学C#的小白，老师要求做这个实验，可是不会做，只能来这求救各位大佬了，求代码及窗体程序，谢谢。

Answer 1

用openfiledialog选择图片，然后pictureBox加载下图片就行了，帮助到你能点个采纳吗，谢谢如需工程文件请站内联系

using System;
using System.Windows.Forms;
namespace WindowsFormsApp1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }


        private void button1_Click(object sender, EventArgs e)
        {
            var d = new OpenFileDialog() { Filter = "JPG文件|*.jpg|PNG文件|*.png" };
            if (d.ShowDialog() == DialogResult.OK)
            {
                pictureBox1.Load(d.FileName);
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            pictureBox1.Width += 30;
            pictureBox1.Height += 30;
        }

        private void button2_Click(object sender, EventArgs e)
        {

            pictureBox1.Width -= 30;
            pictureBox1.Height -= 30;
        }
    }

}