首先，请使用Google并了解您提出的所有建议.
提示:没什么新鲜的. Opendialog只是保持新窗口停留在父窗体上直到关闭的一种方法.现在，放置一个图像保存和检索代码.
我可以在codeproject上共享本文的链接，做类似的事情，但是然后...


看起来，这是您的大学作业，您应该付出一些努力.

这是询问者的期望:
1. 先尝试您要做什么！
2.制定看起来像问题/无法解决的问题.

试试看，告诉他们是否遇到问题.
成员将很乐意为您提供帮助.

To start with, Google and see what all you come-up with.
Hint: It''s nothing new. Opendialog is just a way to keep new window stuck over the parent form until closed. Now, put a code of image save and retrieve.
I can share the link of the article here at codeproject doing something similar but then...


Looks like, this is your college assignment, you should put some effort.

Here is what is expected by enquirers:
1. TRY first what you want to do!
2. Formulate what was done by you that looks like an issue/not working.

Try them and tell if you face issues.
Members will be more than happy to help like this.