TreeNode.Checked Proprietà

public:
 property bool Checked { bool get(); void set(bool value); };

public bool Checked { get; set; }

member this.Checked : bool with get, set

Public Property Checked As Boolean

Valore della proprietà

true se lo stato del nodo della struttura ad albero è di selezione; in caso contrario, false.

Esempio

Nell'esempio di codice seguente viene evidenziato qualsiasi TreeNode oggetto che TreeView ha la Checked relativa proprietà impostata su true impostandone la BackColor proprietà su Yellow. Questo codice richiede che sia presente un TreeView controllo su un Form insieme di TreeNode oggetti.

public:
   void HighlightCheckedNodes()
   {
      int countIndex = 0;
      String^ selectedNode = "Selected customer nodes are : ";
      IEnumerator^ myEnum = myTreeView->Nodes[ 0 ]->Nodes->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         TreeNode^ myNode = safe_cast<TreeNode^>(myEnum->Current);
         
         // Check whether the tree node is checked.
         if ( myNode->Checked )
         {
            
            // Set the node's backColor.
            myNode->BackColor = Color::Yellow;
            selectedNode = String::Concat( selectedNode, myNode->Text, " " );
            countIndex++;
         }
         else
                  myNode->BackColor = Color::White;
      }

      if ( countIndex > 0 )
            MessageBox::Show( selectedNode );
      else
            MessageBox::Show( "No nodes are selected" );
   }

public void HighlightCheckedNodes()
{
   int countIndex = 0;
   string selectedNode = "Selected customer nodes are : ";
   foreach (TreeNode myNode in myTreeView.Nodes[0].Nodes)
   {
      // Check whether the tree node is checked.
      if(myNode.Checked)
      {
         // Set the node's backColor.
         myNode.BackColor = Color.Yellow;
         selectedNode += myNode.Text+" ";
         countIndex++;
      }
      else
            {
                myNode.BackColor = Color.White;
            }
        }

   if(countIndex > 0)
      MessageBox.Show(selectedNode);
   else
      MessageBox.Show("No nodes are selected");
}

Public Sub HighlightCheckedNodes()
   Dim countIndex As Integer = 0
   Dim selectedNode As String = "Selected customer nodes are : "
   Dim myNode As TreeNode
   For Each myNode In  myTreeView.Nodes(0).Nodes
      ' Check whether the tree node is checked.
      If myNode.Checked Then
         ' Set the node's backColor.
         myNode.BackColor = Color.Yellow
         selectedNode += myNode.Text + " "
         countIndex += 1
      Else
         myNode.BackColor = Color.White
      End If
   Next myNode

   If countIndex > 0 Then
      MessageBox.Show(selectedNode)
   Else
      MessageBox.Show("No nodes are selected")
   End If
End Sub

Si applica a

Vedi anche

• CheckBoxes