访问Windows窗体其他窗体上的控件的最佳方式？ [英] Best way to access a control on another form in Windows Forms?
问题描述
首先，这是一个有关使用Windows窗体，而不是一个 ASP.NET 问题的桌面应用程序的问题
First off, this is a question about a desktop application using Windows Forms, not an ASP.NET question.
我需要与其他形式的控件进行交互。我试图通过使用访问控制，例如，下面...
I need to interact with controls on other forms. I am trying to access the controls by using, for example, the following...
otherForm.Controls["nameOfControl"].Visible = false;
它不工作，我希望的方式。我最终从主抛出的异常。不过，如果我使控件公共而不是私人，然后我就可以直接访问它们，如此...
It doesn't work the way I would expect. I end up with an exception thrown from Main. However, if I make the controls public instead of private, I can then access them directly, as so...
otherForm.nameOfControl.Visible = false;
但是，这是最好的方式做到这一点？被认为是最佳做法的其他形式的决策上的控件公共？是否有一个更好的方式来访问另一个窗体上的控件？
But is that the best way to do it? Is making the controls public on the other form considered "best practice"? Is there a "better" way to access controls on another form?
进一步的解释：
这其实是一种后续的另一个问题，我问，的 Best在C＃中建立一个树视图preferences对话框中的类型的接口的方法是什么？ 的。我得到的答案是伟大的，我解决了在保持UI直，易于使用无论是在运行时和设计时工作方面有很多很多的组织问题。然而，它也带来了这一个琐碎的容易控制接口的其他方面的问题。
This is actually a sort of follow-up to another question I asked, Best method for creating a "tree-view preferences dialog" type of interface in C#?. The answer I got was great and solved many, many organizational problems I was having in terms of keeping the UI straight and easy to work with both in run-time and design-time. However, it did bring up this one niggling issue of easily controlling other aspects of the interface.
基本上，我有一个实例很多其他形式的坐根窗体上的面板根形式。因此，例如，对那些子形式之一的无线电按钮可能需要改变主，根形态上的状态条图标的状态。在这种情况下，我需要分形式去跟在父（根）表单的状态条上的控制。 （我希望是有道理的，而不是在谁是第一次的一种方式。）
Basically, I have a root form that instantiates a lot of other forms that sit in a panel on the root form. So, for instance, a radio button on one of those sub-forms might need to alter the state of a status strip icon on the main, root form. In that case, I need the sub-form to talk to the control in the status strip of the parent (root) form. (I hope that makes sense, not in a "who's on first" kind of way.)
推荐答案
而不是使控制公众，你可以创建一个控制其可见性属性：
Instead of making the control public, you can create a property that controls its visibility:
public bool ControlIsVisible
{
get { return control.Visible; }
set { control.Visible = value; }
}
这将创建一个适当的访问到控制，不会暴露控制的一整套属性。
This creates a proper accessor to that control that won't expose the control's whole set of properties.
这篇关于访问Windows窗体其他窗体上的控件的最佳方式？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
