在 C# 中将事件从一个表单传播到另一个表单

Propagating events from one Form to another Form in C#(在 C# 中将事件从一个表单传播到另一个表单)

问题描述

如何在一个表单中单击按钮并在另一个表单中更新 TextBox 中的文本?

How can I click a Button in one form and update text in a TextBox in another form?

推荐答案

如果您尝试使用 WinForms，您可以在您的子"表单中实现自定义事件.当单击子"表单中的按钮时，您可以触发该事件.

If you're attempting to use WinForms, you can implement a custom event in your "child" form. You could have that event fire when the button in your "child" form was clicked.

然后，您的父"表单将监听该事件并处理它自己的 TextBox 更新.

Your "parent" form would then listen for the event and handle it's own TextBox update.

public class ChildForm : Form
{
    public delegate SomeEventHandler(object sender, EventArgs e);
    public event SomeEventHandler SomeEvent;

    // Your code here
}

public class ParentForm : Form
{
    ChildForm child = new ChildForm();
    child.SomeEvent += new EventHandler(this.HandleSomeEvent);

    public void HandleSomeEvent(object sender, EventArgs e)
    {
        this.someTextBox.Text = "Whatever Text You Want...";
    }
}

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