Control.Click Event

Definition

Namespace:

System.Windows.Forms

Assembly:

System.Windows.Forms.dll

Source:

Control.cs

Occurs when the control is clicked.

public:
 event EventHandler ^ Click;

public event EventHandler? Click;

member this.Click : EventHandler 

Public Custom Event Click As EventHandler 

Event Type

EventHandler

Examples

The following code example shows the Click event in an event handler.

   // 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

Remarks

The Click event passes an EventArgs to its event handler, so it only indicates that a click has occurred. If you need more specific mouse information (button, number of clicks, wheel rotation, or location), use the MouseClick event. However, the MouseClick event will not be raised if the click is caused by action other than that of the mouse, such as pressing the ENTER key.

A double-click is determined by the mouse settings of the user's operating system. The user can set the time between clicks of a mouse button that should be considered a double-click rather than two clicks. The Click event is raised every time a control is double-clicked. For example, if you have event handlers for the Click and DoubleClick events of a Form, the Click and DoubleClick events are raised when the form is double-clicked and both methods are called. If a control is double-clicked and that control does not support the DoubleClick event, the Click event might be raised twice.

You must set the StandardClick value of ControlStyles to true for this event to be raised.

Note

The following events are not raised for the TabControl class unless there is at least one TabPage in the TabControl.TabPages collection: Click, DoubleClick, MouseDown, MouseUp, MouseHover, MouseEnter, MouseLeave and MouseMove. If there is at least one TabPage in the collection, and the user interacts with the tab control's header (where the TabPage names appear), the TabControl raises the appropriate event. However, if the user interaction is within the client area of the tab page, the TabPage raises the appropriate event.

For more information about handling events, see Handling and Raising Events.

Notes to inheritors

Inheriting from a standard Windows Forms control and changing the StandardClick or StandardDoubleClick values of ControlStyles to true can cause unexpected behavior or have no effect at all if the control does not support the Click or DoubleClick events.

The following table lists Windows Forms controls and which event (Click or DoubleClick) is raised in response to the mouse action specified.

Control	Left Mouse Click	Left Mouse Double Click	Right Mouse Click	Right Mouse Double Click	Middle Mouse Click	Middle Mouse Double Click	XButton1 Mouse Click	XButton1 Mouse Double-Click	XButton2 Mouse Click	XButton2 Mouse Double-Click
MonthCalendar, DateTimePicker, HScrollBar, VScrollBar	none	none	none	none	none	none	none	none	none	none
Button, CheckBox, RichTextBox, RadioButton	Click	Click, Click	none	none	none	none	none	none	none	none
ListBox, CheckedListBox, ComboBox	Click	Click, DoubleClick	none	none	none	none	none	none	none	none
TextBox, DomainUpDown, NumericUpDown	Click	Click, DoubleClick	none	none	none	none	none	none	none	none
* TreeView, * ListView	Click	Click, DoubleClick	Click	Click, DoubleClick	none	none	none	none	none	none
ProgressBar, TrackBar	Click	Click, Click	Click	Click, Click	Click	Click, Click	Click	Click, Click	Click	Click, Click
Form, DataGrid, Label, LinkLabel, Panel, GroupBox, PictureBox, Splitter, StatusBar, ToolBar, TabPage, ** TabControl	Click	Click, DoubleClick	Click	Click, DoubleClick	Click	Click, DoubleClick	Click	Click, DoubleClick	Click	Click, DoubleClick

* The mouse pointer must be over a child object (TreeNode or ListViewItem).

** The TabControl must have at least one TabPage in its TabPages collection.

See also

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