TreeView右键菜单显示后，要等待大概3-5秒才能消失，偶已经使用Refresh方法了，还是不行，哪位大侠请指教了？

[sankt]

TreeView右键菜单显示后，我点击某个菜单项后，要等待大概3-5秒才能消失，偶已经使用Refresh方法了，还是不行，哪位大侠请指教了？
因为我要点击菜单项显示一个新的form，而这个form显示的数据需要查询大量的数据从数据库，所以form显示也需要一点时间。

Thanks in advance.

[rangeon]

设断点调试一下看看是不是程序有多余的循环

[sankt]

我用刷新方法是我show form之前，也就是我点击菜单项后立即刷新，结果菜单还是延后3-5秒才会消失。

[xjzdr]

这是数据库访问的速度问题，原因很多，不好说，可能有下面几种：
1、数据库访问慢，只能优化数据库及表，如建立索引、优化SQL语句等
2、网络慢
3、新FORM在初始化时访问数据，不要在LOAD中再访问，也可以缓解一些
4、有些数据不一定要一次加载。

[sankt]

Thanks the friend above.

Any other constructive suggestions?

[sankt]

Anyone can kindly shed a little light on my question?

[yilanwuyu123]

英语不好 不能保持队列 楼主原谅

[sankt]

It is really incredible.
I have fixed this right-click menu issue.

And I would like to share some experience with you guys.
I just changed menu show method from in MouseUp event to in MouseDown event.

Then this menu would disappear immediately after I clicked any item on the menu.

[ouhou]

Application.DoEvent();

[ouhou]

在点击右键菜单中，显示窗体前加入 Application.DoEvent();

[sankt]

Thanks all the friends that have jumped into the problem.
I would like to close this subject now.

[wanabe]

jumped into ?junp in
my english is so poor