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TreeNodeCollection.GetEnumerator Método

Definição

Retorna um enumerador que pode ser usado para iterar por meio da coleção do nó de árvore.

public:
 virtual System::Collections::IEnumerator ^ GetEnumerator();
public System.Collections.IEnumerator GetEnumerator ();
abstract member GetEnumerator : unit -> System.Collections.IEnumerator
override this.GetEnumerator : unit -> System.Collections.IEnumerator
Public Function GetEnumerator () As IEnumerator

Retornos

IEnumerator

Um IEnumerator que representa o a coleção do nó de árvore.

Implementações

Exemplos

O exemplo de código a seguir determina se um especificado TreeNode está dentro de um TreeNodeCollectione, em seguida, enumera a coleção. Este exemplo exige que você tenha um Form com um TreeView que contém um TreeNodeCollection TreeNode nome myTreeNode2.

void EnumerateTreeNodes()
{
   TreeNodeCollection^ myNodeCollection = myTreeView->Nodes;

   // Check for a node in the collection.
   if ( myNodeCollection->Contains( myTreeNode2 ) )
   {
      myLabel->Text = myLabel->Text + "Node2 is at index: " + myNodeCollection->IndexOf( myTreeNode2 );
   }

   myLabel->Text = myLabel->Text + "\n\nElements of the TreeNodeCollection:\n";

   // Create an enumerator for the collection.
   IEnumerator^ myEnumerator = myNodeCollection->GetEnumerator();
   while ( myEnumerator->MoveNext() )
   {
      myLabel->Text = myLabel->Text + (dynamic_cast<TreeNode^>(myEnumerator->Current))->Text + "\n";
   }
}
private void EnumerateTreeNodes()
{
   TreeNodeCollection myNodeCollection = myTreeView.Nodes;
   // Check for a node in the collection.
   if (myNodeCollection.Contains(myTreeNode2))
   {
      myLabel.Text += "Node2 is at index: " + myNodeCollection.IndexOf(myTreeNode2);
   }
   myLabel.Text += "\n\nElements of the TreeNodeCollection:\n";

   // Create an enumerator for the collection.
   IEnumerator myEnumerator = myNodeCollection.GetEnumerator();
   while(myEnumerator.MoveNext())
   {
      myLabel.Text += ((TreeNode)myEnumerator.Current).Text +"\n";
   }
}
Private Sub EnumerateTreeNodes()
   Dim myNodeCollection As TreeNodeCollection = myTreeView.Nodes
   ' Check for a node in the collection.
   If myNodeCollection.Contains(myTreeNode2) Then
      myLabel.Text += "Node2 is at index: " + myNodeCollection.IndexOf(myTreeNode2)
   End If
   myLabel.Text += ControlChars.Cr + ControlChars.Cr + _
     "Elements of the TreeNodeCollection:" + ControlChars.Cr
   
   ' Create an enumerator for the collection.
   Dim myEnumerator As IEnumerator = myNodeCollection.GetEnumerator()
   While myEnumerator.MoveNext()
      myLabel.Text += CType(myEnumerator.Current, TreeNode).Text + ControlChars.Cr
   End While
End Sub

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