C# .NET WinForms控件类

WinForms应用程序中显示的所有窗口和控件（包括active-x）是否都来自System.windows.Forms.Control类？

基本上是的

但是，非可视组件（如计时器）是从组件（或实现IComponent）派生的。只有像按钮和窗体这样的可视元素是从控件派生的

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另外，ActiveX控件不是从控件本身派生的，因为它们是COM组件；相反，当您导入ActiveX控件时，VisualStudio会生成一个从AxHost派生并承载COM对象的包装器。（AxHost本身确实源于控件。）

我认为您应该看看

继承层次

系统..:：.Object

系统..:：.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