.NET WinForms控件类

Question

所有在WinForms应用程序中显示的窗口和控件（包括ActiveX）都是从System.Windows.Forms.Control类派生而来的吗？

- user90150

Answer 1

基本上是的。

然而，像计时器这样的非可视组件是从Component（或实现IComponent）派生的。只有像Button和Form这样的可视元素才是从Control派生的。

此外，ActiveX控件并不是直接从Control派生的，因为它们是COM组件；相反，当您导入一个ActiveX控件时，Visual Studio会生成一个从AxHost派生并托管COM对象的包装器。（AxHost本身确实是从Control派生的。）

- itowlson

Answer 2

我认为你应该看一下

http://msdn.microsoft.com/en-us/library/aa651811(VS.71).aspx

Inheritance Hierarchy

System..::.Object

System..::.MarshalByRefObject

System.ComponentModel..::.Component

 System.Windows.Forms..::.Control

   System.Windows.Forms..::.AxHost

   System.Windows.Forms..::.ButtonBase

   System.Windows.Forms..::.DataGrid

   System.Windows.Forms..::.DataGridView

   System.Windows.Forms..::.DateTimePicker

   System.Windows.Forms..::.GroupBox

   System.Windows.Forms.Integration..::.ElementHost

   System.Windows.Forms..::.Label

   System.Windows.Forms..::.ListControl

   System.Windows.Forms..::.ListView

   System.Windows.Forms..::.MdiClient

   System.Windows.Forms..::.MonthCalendar

   System.Windows.Forms..::.PictureBox

   System.Windows.Forms..::.PrintPreviewControl

   System.Windows.Forms..::.ProgressBar

   System.Windows.Forms..::.ScrollableControl

   System.Windows.Forms..::.ScrollBar

   System.Windows.Forms..::.Splitter

   System.Windows.Forms..::.StatusBar

   System.Windows.Forms..::.TabControl

   System.Windows.Forms..::.TextBoxBase

   System.Windows.Forms..::.ToolBar

   System.Windows.Forms..::.TrackBar

   System.Windows.Forms..::.TreeView

   System.Windows.Forms..::.WebBrowserBase

- Nasser Hadjloo