TreeNodeCollection.CopyTo(Array, Int32) Método

Definición

Espacio de nombres:

System.Windows.Forms

Ensamblado:

System.Windows.Forms.dll

Copia toda la colección en una matriz existente, en un lugar especificado de la matriz.

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)

Parámetros

dest

Array

Matriz de destino.

index

Int32

Índice de la matriz de destino donde se inicia el almacenamiento.

Implementaciones

CopyTo(Array, Int32)

Ejemplos

En el ejemplo de código siguiente se muestra el número de objetos de TreeNode , TreeNodeCollectionse copia el contenido de la colección en una Object matriz y se muestra una lista de los nodos de árbol de un Label control . En este ejemplo se requiere que tenga un TreeView objeto con al menos uno TreeNode en su TreeNodeCollectiony un Label control en .Form

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