how i control 2 picturebox upload photo with one button

Question

private void button6_Click(object sender, EventArgs e)
    {
        OpenFileDialog fd = new OpenFileDialog();
        fd.Filter = "Image Files(*.jpg; *.jpeg; *.gif; *.bmp)|*.jpg; *.jpeg; *.gif; *.bmp";
        fd.ShowDialog();
        pictureBox12.ImageLocation = fd.FileName;
        textBox35.Text = fd.FileName;

        if (pictureBox12.ImageLocation == fd.FileName)
        {
                OpenFileDialog fd2 = new OpenFileDialog();
                fd2.ShowDialog();
                pictureBox11.ImageLocation = fd2.FileName;
        }
    }

i have 2 picturebox and 1 upload button i want first time click button and open showdialog and choosephoto and closeshowdialog and again click button this time choose for second picturebox but problem is first time click button and step by step 2 open showdialog