主题：[求助]如何获取已经载入了的图片地址

我通过对话框载入了一个图片

Dim fm As WinForm.Form = Forms("submit-11")
Dim dlg As new OpenFileDialog
dlg.ShowDialog
dlg.MultiSelect = False
dlg.Filter = "图片文件|*.bmp;*.jpg;*.gif;*.ico;*.png"

Dim adrs As String = dlg.FileName
Dim pic As WinForm.PictureBox = fm.controls("PictureBox1")
pic.ImageFile = adrs

我希望在窗口的另外一个按钮的click事件中获取这个图片的地址，如何获得？