C# pictureBox用法案例详解

 private void button3_Click(object sender, EventArgs e)
        {
            //指定查找的文件类型
            openFileDialog1.Filter = "@.Jpg|*.jpg|@.Png|*.png|@.Gif|*.gif|@.All files|*.*";
            //该对话框会返回一个DialogResult类型的值,DialogResult.OK或者DialogResult.NO
            DialogResult dr = openFileDialog1.ShowDialog();
            if (dr == DialogResult.OK)
            {
                //通过输入文件目录，文件模式，访问模式等参数，通过流打开文件
                FileStream fs = new FileStream(openFileDialog1.FileName, FileMode.Open, FileAccess.Read);
                //通过调用系统的画笔工具，画出一个Image类型的数据，传给pictureBox。
                Image im = System.Drawing.Bitmap.FromStream(fs);
                pictureBox1.Image = im;
                pictureBox2.Image = im;
                pictureBox3.Image = im;
                pictureBox4.Image = im;

            }
        }