Control.Click 事件

public:
 event EventHandler ^ Click;

public event EventHandler Click;

public event EventHandler? Click;

member this.Click : EventHandler 

Public Custom Event Click As EventHandler 

事件类型

示例

下面的代码示例演示 Click 事件处理程序中的事件。

   // This example uses the Parent property and the Find method of Control to set
   // properties on the parent control of a Button and its Form. The example assumes
   // that a Button control named button1 is located within a GroupBox control. The 
   // example also assumes that the Click event of the Button control is connected to
   // the event handler method defined in the example.
private:
   void button1_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      // Get the control the Button control is located in. In this case a GroupBox.
      Control^ control = button1->Parent;
      
      // Set the text and backcolor of the parent control.
      control->Text = "My Groupbox";
      control->BackColor = Color::Blue;
      
      // Get the form that the Button control is contained within.
      Form^ myForm = button1->FindForm();
      
      // Set the text and color of the form containing the Button.
      myForm->Text = "The Form of My Control";
      myForm->BackColor = Color::Red;
   }

// This example uses the Parent property and the Find method of Control to set
// properties on the parent control of a Button and its Form. The example assumes
// that a Button control named button1 is located within a GroupBox control. The 
// example also assumes that the Click event of the Button control is connected to
// the event handler method defined in the example.
private void button1_Click(object sender, System.EventArgs e)
{
   // Get the control the Button control is located in. In this case a GroupBox.
   Control control = button1.Parent;
   // Set the text and backcolor of the parent control.
   control.Text = "My Groupbox";
   control.BackColor = Color.Blue;
   // Get the form that the Button control is contained within.
   Form myForm = button1.FindForm();
   // Set the text and color of the form containing the Button.
   myForm.Text = "The Form of My Control";
   myForm.BackColor = Color.Red;
}

' This example uses the Parent property and the Find method of Control to set
' properties on the parent control of a Button and its Form. The example assumes
' that a Button control named button1 is located within a GroupBox control. The 
' example also assumes that the Click event of the Button control is connected to
' the event handler method defined in the example.
Private Sub button1_Click(sender As Object, e As System.EventArgs) Handles button1.Click
   ' Get the control the Button control is located in. In this case a GroupBox.
   Dim control As Control = button1.Parent
   ' Set the text and backcolor of the parent control.
   control.Text = "My Groupbox"
   control.BackColor = Color.Blue
   ' Get the form that the Button control is contained within.
   Dim myForm As Form = button1.FindForm()
   ' Set the text and color of the form containing the Button.
   myForm.Text = "The Form of My Control"
   myForm.BackColor = Color.Red
End Sub

注解

该 Click 事件将传递给 EventArgs 其事件处理程序，因此它只指示单击已发生。 如果需要更具体的鼠标信息（按钮、单击次数、滚轮旋转或位置），请使用 MouseClick 事件。 但是， MouseClick 如果单击是由鼠标以外的操作（例如按 Enter 键）引起的，则不会引发该事件。

双击由用户的操作系统的鼠标设置决定。 用户可以设置鼠标按钮单击之间的时间，该按钮应被视为双击，而不是两次单击。 Click每次双击控件时都会引发该事件。 例如，如果你有事件的ClickDoubleClickFormClick事件处理程序，则当双击窗体并调用这两种方法时，将引发和DoubleClick事件。 如果双击某个控件并且该控件不支持该 DoubleClick 事件， Click 则可能会引发该事件两次。

必须设置StandardClick要引发此事件的值ControlStylestrue。

有关处理事件的详细信息，请参阅 处理和引发事件。

继承者的注释

从标准Windows 窗体控件继承并将 StandardClick 或 StandardDoubleClick 值ControlStyles更改为 true可能会导致意外行为，或者如果控件不支持 Click 或 DoubleClick 事件，则根本不起作用。

下表列出了Windows 窗体控件以及为响应指定的鼠标操作而引发的事件（Click或 DoubleClick）。

* 鼠标指针必须位于子对象上（TreeNode 或 ListViewItem）。

TabControl** 集合TabPage中必须至少有一个TabPages。

另请参阅

• OnClick(EventArgs)
• StandardClick
• MouseClick
• DoubleClick
• MouseDoubleClick