我如何将文本框从一种形式传递到另一种形式？ [英] How I Can Pass A Text Box From One Form To Another?

问题描述

我想制作一个带有2个表格的简单计算器，通过继承连接在一起。

如何将表单1文本框传递给表单2？

from 1只有2个文本框。

表2有1个文本框和4个按钮。

I want to make a simple calculator with 2 form that are joined together by inheritance.
how i can pass form 1 text box's to form 2?
from 1 has just 2 text box.
form 2 has 1 text box and 4 button .

推荐答案

这是关于表单协作的流行问题。最强大的解决方案是在表单类中实现适当的接口，并传递接口引用而不是引用Form的整个实例。有关更多详细信息，请参阅我以前的解决方案：如何以两种形式复制列表框之间的所有项目 [ ^ ]。



另请参阅此处的其他解决方案讨论。如果应用程序足够简单，解决方案就像在一个表单中声明一些 internal 属性并将对一个表单的实例的引用传递给另一个表单的实例一样简单形成。对于更复杂的项目，这种违反严格封装的样式和松散耦合可能会增加代码的意外复杂性并引发错误，因此封装良好的解决方案将是优惠。



另请参阅：

http://en.wikipedia.org/wiki/Accidental_complexity [ ^ ]，

http://en.wikipedia.org/wiki/Loose_coupling [ ^ ]。

-SA

This is the popular question about form collaboration. The most robust solution is implementation of an appropriate interface in form class and passing the interface reference instead of reference to a "whole instance" of a Form. Please see my past solution for more detail: How to copy all the items between listboxes in two forms[^].

Please also see other solutions in this discussion. If the application is simple enough, the solution could be as simple as declaring of some internal property in one form and passing a reference to the instance of one form to the instance of another form. For more complex projects, such violation of strictly encapsulated style and loose coupling could add up the the accidental complexity of the code and invite mistakes, so the well-encapsulated solution would be preferable.

Please see also:
http://en.wikipedia.org/wiki/Accidental_complexity[^],
http://en.wikipedia.org/wiki/Loose_coupling[^].

—SA

要添加到解决方案1，有几种方法可以执行此操作。但是，您不应该将文本框从表单传递到另一个表单，只是文本框中包含的数据。



通知另一个表单的一种方法是使用事件。看看在Windows窗体之间传递数据 [ ^ ]并研究如何构建演示。它应该可以帮助你开始。

To add to solution 1 there are several ways of doing this. However, you shouldn't probably pass the text box from a form to another, just the data the text box contains.

One way to inform the other form is to use events. Have a look at Passing Data between Windows Forms[^] and investigate how the demo is built. It should help you to get started.

由于这个问题非常受欢迎，我以前的答案往往不太清楚，可能还不够清楚，我决定写一个提示/技巧文章完整的详细代码示例和解释：回答的许多问题一次 - Windows窗体或WPF Windows之间的协作。

-SA

As the question turned out to be very popular, and my previous answers often were not well understood, probably were not clear enough, I decided to write a Tips/Trick article complete with detailed code samples and explanations: Many Questions Answered at Once — Collaboration between Windows Forms or WPF Windows.

—SA

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