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C＃主窗体使用动态控件刷新

[英]C# Main form refresh with dynamic controls

原文 2010-12-08 11:22:26 2 2 c#/ winforms/ dynamic/ controls

I'm developing a windows form application with controls on the main form that retreive their values from a mySQL database. 我正在开发一个Windows窗体应用程序，其主窗体上的控件可从mySQL数据库检索其值。 When the database gets updated I need the form to repaint and refresh the controls. 当数据库更新时，我需要表格来重新绘制和刷新控件。 Can anyone reccommend a solution to this? 任何人都可以推荐解决方案吗？ On sub forms I've instantiated a new instance of the form and dispose of the old one, but I can't do that with the main form. 在子表单上，我实例化了表单的新实例并处理了旧的实例，但是我不能在主表单上做到这一点。 Thank-You for considering my question. 谢谢您考虑我的问题。

2 个解决方案

I'm not sure if correctly understood your question, but you could put your controls inside of a user control and use-it in the main form. 我不确定是否正确理解了您的问题，但是您可以将您的控件放在用户控件中，并以主要形式使用它。 Then, you could do the same you did with the forms: dispose and create a new one. 然后，您可以执行与表单相同的操作：处置并创建一个新表单。

This should solve your problem, however, you may have some problems with scrollbars and the resizing of your form. 这应该可以解决您的问题，但是，滚动条和表单的大小可能会有些问题。

If it were me, I wouldn't dispose of a UI with another, that is in focus for the user. 如果是我，我不会与另一个UI一起丢弃，这是用户关注的重点。 That would kind of irritate the user especially if the update is automatic. 这会激怒用户，特别是如果更新是自动的。

Suppose you have view-only controls like gridview or labels updating with live values, then you can put a time interval and display a seconds ticker clearly telling the user when an update is going to happen. 假设您具有仅查看控件，例如gridview或使用实时值更新的标签，那么您可以放置一个时间间隔并显示秒数指示器，以清楚地告诉用户何时进行更新。

You should consider having an update method on all your controls (or one usercontrol having all the controls) which you can trigger to update the controls at timed intervals. 您应该考虑对所有控件（或一个具有所有控件的用户控件）使用一种更新方法，您可以触发该更新方法以定期更新这些控件。