C# 用户控件与 Windows 窗体
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User Control vs. Windows Form
提问by Arlen Beiler
What is the difference between a user control and a windows form in Visual Studio - C#?
Visual Studio - C# 中的用户控件和 Windows 窗体有什么区别？
采纳答案by Bill Martin
Put very simply:
说得非常简单：
User controls are a way of making a custom, reusable component. A user control can contain other controls but must be hosted by a form.
用户控件是一种制作自定义、可重用组件的方法。用户控件可以包含其他控件，但必须由表单承载。
Windows forms are the container for controls, including user controls. While it contains many similar attributes as a user control, it's primary purpose is to host controls.
Windows 窗体是控件的容器，包括用户控件。虽然它包含许多与用户控件相似的属性，但它的主要目的是承载控件。
回答by Ikke
A windows form is a container for user controls.
Windows 窗体是用户控件的容器。
回答by Hans Passant
They have a lotin common, they are both derived from ContainerControl. UserControl however is designed to be a child window, it needs to be placed in a container. Form was designed to be a top-level window without a parent.
它们有很多共同点，都源自ContainerControl。然而 UserControl 被设计为一个子窗口，它需要被放置在一个容器中。Form 被设计为一个没有父级的顶级窗口。
You can actually turn a Form into a child window by setting its TopLevel property to false:
实际上，您可以通过将 Form 的 TopLevel 属性设置为 false 来将 Form 变成子窗口：
public partial class Form1 : Form {
public Form1() {
InitializeComponent();
var child = new Form2();
child.TopLevel = false;
child.Location = new Point(10, 5);
child.Size = new Size(100, 100);
child.BackColor = Color.Yellow;
child.FormBorderStyle = FormBorderStyle.None;
child.Visible = true;
this.Controls.Add(child);
}
}
回答by sunnytyra
The biggest difference is form.show gives a different window while usercontrol doesnt have feature like popping up without a parent. Rest things are same in both the controls like beind derived from Scrollablecontrol.
最大的区别是 form.show 给出了一个不同的窗口，而 usercontrol 没有像没有父级弹出的功能。其余的东西在两个控件中都是相同的，比如从 Scrollablecontrol 派生的 beind。
