ListViewItem.GetSubItemAt(Int32, Int32) Méthode

public:
 System::Windows::Forms::ListViewItem::ListViewSubItem ^ GetSubItemAt(int x, int y);

public System.Windows.Forms.ListViewItem.ListViewSubItem GetSubItemAt(int x, int y);

public System.Windows.Forms.ListViewItem.ListViewSubItem? GetSubItemAt(int x, int y);

member this.GetSubItemAt : int * int -> System.Windows.Forms.ListViewItem.ListViewSubItem

Public Function GetSubItemAt (x As Integer, y As Integer) As ListViewItem.ListViewSubItem

Paramètres

Retours

Au ListViewItem.ListViewSubItem niveau des coordonnées x et y spécifiées.

Exemples

L’exemple de code suivant montre comment utiliser la GetSubItemAt méthode. Pour exécuter ce code, collez-le dans un formulaire Windows et appelez InitializeListView1 à partir du constructeur du formulaire ou Load méthode de gestion des événements.

private ListView listView1;

private void  InitializeListView1(){
    listView1 = new ListView();
    
    // Set the view to details to show subitems.
    listView1.View = View.Details;
   
    // Add some columns and set the width.
    listView1.Columns.Add("Name");
    listView1.Columns.Add("Number");
    listView1.Columns.Add("Description");
    listView1.Width = 175;

    // Create some items and subitems; add the to the ListView.
    ListViewItem item1 = new ListViewItem("Widget");
    item1.SubItems.Add(new ListViewItem.ListViewSubItem(item1, "14"));
    item1.SubItems.Add(new ListViewItem.ListViewSubItem(item1, 
        "A description of Widget"));
    ListViewItem item2 = new ListViewItem("Bracket");
    item2.SubItems.Add(new ListViewItem.ListViewSubItem(item2, "8"));
    listView1.Items.Add(item1);
    listView1.Items.Add(item2);
    
    // Add the ListView to the form.
    this.Controls.Add(listView1);
    listView1.MouseDown += new MouseEventHandler(listView1_MouseDown);
}

void listView1_MouseDown(object sender, MouseEventArgs e)
{
    // Get the item at the mouse pointer.
    ListViewHitTestInfo info = listView1.HitTest(e.X, e.Y);

    ListViewItem.ListViewSubItem subItem = null;
    
    // Get the subitem 120 pixels to the right.
    if (info != null)
        if (info.Item != null)
            subItem = info.Item.GetSubItemAt(e.X + 120, e.Y);
    
    // Show the text of the subitem, if found.
    if (subItem != null)
        MessageBox.Show(subItem.Text);
}

Private WithEvents listView1 As ListView

Private Sub InitializeListView1()
    listView1 = New ListView()

    ' Set the view to details to show subitems.
    listView1.View = View.Details

    ' Add some columns and set the width.
    listView1.Columns.Add("Name")
    listView1.Columns.Add("Number")
    listView1.Columns.Add("Description")
    listView1.Width = 175

    ' Create some items and subitems; add the to the ListView.
    Dim item1 As New ListViewItem("Widget")
    item1.SubItems.Add(New ListViewItem.ListViewSubItem(item1, "14"))
    item1.SubItems.Add(New ListViewItem.ListViewSubItem(item1, "A description of Widget"))
    Dim item2 As New ListViewItem("Bracket")
    item2.SubItems.Add(New ListViewItem.ListViewSubItem(item2, "8"))
    listView1.Items.Add(item1)
    listView1.Items.Add(item2)

    ' Add the ListView to the form.
    Me.Controls.Add(listView1)
End Sub

Private Sub listView1_MouseDown(ByVal sender As Object, ByVal e As MouseEventArgs)


    ' Get the item at the mouse pointer.
    Dim info As ListViewHitTestInfo = listView1.HitTest(e.X, e.Y)

    Dim subItem As ListViewItem.ListViewSubItem = Nothing

    ' Get the subitem 120 pixels to the right.
    If (info IsNot Nothing) Then
        If (info.Item IsNot Nothing) Then
            subItem = info.Item.GetSubItemAt(e.X + 120, e.Y)
        End If
    End If ' Show the text of the subitem, if found.
    If (subItem IsNot Nothing) Then
        MessageBox.Show(subItem.Text)
    End If
End Sub

Remarques

La GetSubItemAt méthode retourne null si l’élément ListView n’est pas en Details mode, ou s’il n’y a pas de ListViewItem.ListViewSubItem emplacement situé au point spécifié.