ToolStripDropDownItem.DropDownOpened ToolStripDropDownItem.DropDownOpened ToolStripDropDownItem.DropDownOpened ToolStripDropDownItem.DropDownOpened Event

Definición

Se produce cuando se abre el control ToolStripDropDown.Occurs when the ToolStripDropDown has opened.

public:
 event EventHandler ^ DropDownOpened;
public event EventHandler DropDownOpened;
member this.DropDownOpened : EventHandler 
Public Custom Event DropDownOpened As EventHandler 

Ejemplos

En el ejemplo de código siguiente se muestra cómo DropDownOpened controlar el evento ToolStripDropDownItem para varios controles.The following code example demonstrates how to handle the DropDownOpened event for multiple ToolStripDropDownItem controls. Este ejemplo de código forma parte de un ejemplo más extenso proporcionado ToolStripDropDownItem para la clase.This code example is part of a larger example provided for the ToolStripDropDownItem class.

// This method handles the DropDownOpened event from a 
// ToolStripDropDownItem. It displays the value of the 
// item's Text property in the form's StatusStrip control.
void toolStripDropDownItem_DropDownOpened(object sender, EventArgs e)
{
    ToolStripDropDownItem item = sender as ToolStripDropDownItem;

    string msg = String.Format("Item opened: {0}", item.Text);
    this.toolStripStatusLabel1.Text = msg;
}
' This method handles the DropDownOpened event from a 
' ToolStripDropDownItem. It displays the value of the 
' item's Text property in the form's StatusStrip control.
 Private Sub toolStripDropDownItem_DropDownOpened(ByVal sender As Object, ByVal e As EventArgs)

     Dim item As ToolStripDropDownItem = CType(sender, ToolStripDropDownItem)

     Dim msg As String = String.Format("Item opened: {0}", item.Text)
     Me.toolStripStatusLabel1.Text = msg

 End Sub

Comentarios

Este evento se produce cuando el usuario hace clic en el elemento desplegable o cuando se ShowDropDown llama al método.This event occurs when the user clicks the drop down item or when you call the ShowDropDown method. Puede usar este evento para rellenar dinámicamente ToolStripDropDownel.You can use this event to dynamically populate the ToolStripDropDown.

Para obtener más información sobre el manejo de eventos, consulte controlar y provocar eventos.For more information about handling events, see Handling and Raising Events.

Se aplica a