TreeNodeCollection.CopyTo(Array, Int32) Methode

Definition

Namespace:
System.Windows.Forms
Assembly:
System.Windows.Forms.dll
Quelle:
TreeNodeCollection.cs
Quelle:
TreeNodeCollection.cs
Quelle:
TreeNodeCollection.cs
Quelle:
TreeNodeCollection.cs
Quelle:
TreeNodeCollection.cs

Kopiert die gesamte Auflistung an einer angegebenen Position innerhalb des Arrays in ein vorhandenes Array.

public:
 virtual void CopyTo(Array ^ dest, int index);
public void CopyTo(Array dest, int index);
abstract member CopyTo : Array * int -> unit
override this.CopyTo : Array * int -> unit
Public Sub CopyTo (dest As Array, index As Integer)

Parameter

dest
Array

Das Zielarray.

index
Int32

Der Index im Zielarray, an dem der Speicher beginnt.

Implementiert

CopyTo(Array, Int32)

Beispiele

Im folgenden Codebeispiel wird die Anzahl der TreeNode Objekte in einem TreeNodeCollectionObjekt angezeigt, der Inhalt der Auflistung in ein Object Array kopiert und eine Liste der Strukturknoten in einem Label Steuerelement angezeigt. In diesem Beispiel ist es erforderlich, dass Sie ein TreeView Steuerelement mit mindestens einem TreeNodeTreeNodeCollectionLabelSteuerelement in einem Steuerelement Formhaben.

void CopyTreeNodes()
{
   // Get the collection of TreeNodes.
   TreeNodeCollection^ myNodeCollection = myTreeView->Nodes;
   int myCount = myNodeCollection->Count;
   myLabel->Text = String::Concat( myLabel->Text, "Number of nodes in the collection : ", myCount );
   myLabel->Text = String::Concat( myLabel->Text, "\n\nElements of the Array after Copying from the collection :\n" );
   
   // Create an Object array.
   array<Object^>^myArray = gcnew array<Object^>(myCount);
   
   // Copy the collection into an array.
   myNodeCollection->CopyTo( myArray, 0 );
   for ( int i = 0; i < myArray->Length; i++ )
   {
      myLabel->Text = myLabel->Text + (dynamic_cast<TreeNode^>(myArray[ i ]))->Text + "\n";

   }
}

private void CopyTreeNodes()
{
   // Get the collection of TreeNodes.
   TreeNodeCollection myNodeCollection = myTreeView.Nodes;
   int myCount = myNodeCollection.Count;

   myLabel.Text += "Number of nodes in the collection :" + myCount;
   myLabel.Text += "\n\nElements of the Array after Copying from the collection :\n";
   // Create an Object array.
   Object[] myArray = new Object[myCount];
   // Copy the collection into an array.
   myNodeCollection.CopyTo(myArray,0);
   for(int i=0; i<myArray.Length; i++)
   {
      myLabel.Text += ((TreeNode)myArray[i]).Text + "\n";
   }
}

Private Sub CopyTreeNodes()
   ' Get the collection of TreeNodes.
   Dim myNodeCollection As TreeNodeCollection = myTreeView.Nodes
   Dim myCount As Integer = myNodeCollection.Count

   myLabel.Text += "Number of nodes in the collection :" + myCount.ToString()

   myLabel.Text += ControlChars.NewLine + ControlChars.NewLine + _
     "Elements of the Array after Copying from the collection :" + ControlChars.NewLine

   ' Create an Object array.
   Dim myArray(myCount -1) As Object

   ' Copy the collection into an array.
   myNodeCollection.CopyTo(myArray, 0)
   Dim i As Integer
   For i = 0 To myArray.Length - 1
      myLabel.Text += CType(myArray(i), TreeNode).Text + ControlChars.NewLine
   Next i
End Sub

Gilt für: