TreeNodeCollection.GetEnumerator Method
Definition
Important
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Returns an enumerator that can be used to iterate through the tree node collection.
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
Returns
An IEnumerator that represents the tree node collection.
Implements
Examples
The following code example determines if a specified TreeNode is within a TreeNodeCollection, and then enumerates the collection. This example requires that you have a Form with a TreeView that has a TreeNodeCollection that contains a TreeNode named 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
Applies to
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