Question

form1中添加了picturebox form2 也有一个picturebox 怎样把加载的图片公用 俩个picturebox都可以调用

Answer 1

form1中的picturebox加载图片之后：
Picture1.Picture = Form1.Picture1.Picture

Answer 2

需要在代码中实现：
pictureBox1.ImageLocation = "D:/pic1.jpg";
pictureBox2.ImageLocation = "D:/pic1.jpg";

追问

public void 打开ToolStripMenuItem_Click(object sender, EventArgs e)
{
this.openFileDialog1.ShowDialog();
string path = this.openFileDialog1.FileName;
Form3 frm3 = new Form3();
frm3.Show();
frm3.pictureBox1.Image = Image.FromFile(path) 正解