ListView.ColumnWidthChanging Evento

Definición

Se produce cuando cambia el ancho de una columna.Occurs when the width of a column is changing.

public:
 event System::Windows::Forms::ColumnWidthChangingEventHandler ^ ColumnWidthChanging;
public event System.Windows.Forms.ColumnWidthChangingEventHandler ColumnWidthChanging;
member this.ColumnWidthChanging : System.Windows.Forms.ColumnWidthChangingEventHandler 
Public Custom Event ColumnWidthChanging As ColumnWidthChangingEventHandler 

Ejemplos

En el ejemplo de código siguiente se muestra cómo controlar el evento ColumnWidthChanging.The following code example demonstrates handling the ColumnWidthChanging event. También se muestran los miembros ColumnWidthChangingEventArgs.NewWidth y Cancel.It also demonstrates the ColumnWidthChangingEventArgs.NewWidth and Cancel members. Para ejecutar este ejemplo, pegue el código en un Windows Form.To run this example, paste the code into a Windows Form. Llame a InitializeListView1 desde el constructor del formulario o el controlador de eventos Load.Call InitializeListView1 from the form's constructor or Load event handler.

 ListView listView1 = new ListView();
 private void InitializeListView1()
 {
     // Initialize a ListView in detail view and add some columns.
     listView1.View = View.Details;
     listView1.Width = 200;
     listView1.Columns.Add("Column1");
     listView1.Columns.Add("Column2");

     // Associate a method with the ColumnWidthChangingEvent.
     listView1.ColumnWidthChanging += 
         new ColumnWidthChangingEventHandler(listView1_ColumnWidthChanging);
     this.Controls.Add(listView1);
 }

 // Handle the ColumnWidthChangingEvent.
 private void listView1_ColumnWidthChanging(object sender,  
     ColumnWidthChangingEventArgs e)
 {
     // Check if the new width is too big or too small.
     if (e.NewWidth > 100 || e.NewWidth < 5)
     {
         // Cancel the event and inform the user if the new
         // width does not meet the criteria.
         MessageBox.Show("Column width is too large or too small");
         e.Cancel = true;
     }
 }
 
Private WithEvents listView1 As New ListView()

Private Sub InitializeListView1()

    ' Initialize a ListView in detail view and add some columns.
    listView1.View = View.Details
    listView1.Width = 200
    listView1.Columns.Add("Column1")
    listView1.Columns.Add("Column2")
    Me.Controls.Add(listView1)

End Sub


' Handle the ColumnWidthChangingEvent.
Private Sub listView1_ColumnWidthChanging(ByVal sender As Object, _
    ByVal e As ColumnWidthChangingEventArgs) _
    Handles listView1.ColumnWidthChanging

    ' Check if the new width is too big or too small.
    If e.NewWidth > 100 OrElse e.NewWidth < 5 Then

        ' Cancel the event and inform the user if the new
        ' width does not meet the criteria.
        MessageBox.Show("Column width is too large or too small")
        e.Cancel = True
    End If

End Sub

Comentarios

Este evento permite comprobar el ancho de columna nuevo con la propiedad ColumnWidthChangingEventArgs.NewWidth y cancelar el evento si se elige estableciendo la propiedad Cancel en true.This event allows you to check the new column width with the ColumnWidthChangingEventArgs.NewWidth property, and cancel the event if you choose by setting the Cancel property to true.

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