TreeNodeCollection.Item[] Property

Source:

TreeNodeCollection.cs

Source:

TreeNodeCollection.cs

Source:

TreeNodeCollection.cs

public:
 virtual property System::Windows::Forms::TreeNode ^ default[int] { System::Windows::Forms::TreeNode ^ get(int index); void set(int index, System::Windows::Forms::TreeNode ^ value); };

public virtual System.Windows.Forms.TreeNode this[int index] { get; set; }

member this.Item(int) : System.Windows.Forms.TreeNode with get, set

Default Public Overridable Property Item(index As Integer) As TreeNode

Parameters

Property Value

The TreeNode at the specified indexed location in the collection.

Exceptions

Examples

The following code example removes the first TreeNode from a TreeView if its TreeNode.Text property is set to "Node0". When a Button is clicked, the first TreeNode in the TreeView is deleted using the RemoveAt method. This example requires that you have created a TreeView and a Button on a Form. The first TreeNode in your TreeView should have a text property of "Node0."

void button2_Click( Object^ /*sender*/, EventArgs^ /*e*/ )
{
   // Delete the first TreeNode in the collection
   // if the Text property is S"Node0."
   if ( this->treeView1->Nodes[ 0 ]->Text->Equals( "Node0" ) )
   {
      this->treeView1->Nodes->RemoveAt( 0 );
   }
}

private void button2_Click(object sender, EventArgs e)
{
   // Delete the first TreeNode in the collection 
   // if the Text property is "Node0." 
   if(this.treeView1.Nodes[0].Text == "Node0")
   {
      this.treeView1.Nodes.RemoveAt(0);
   }
}

Private Sub button2_Click(sender As Object, e As EventArgs) Handles button2.Click
   ' Delete the first TreeNode in the collection 
   ' if the Text property is "Node0." 
   If Me.treeView1.Nodes(0).Text = "Node0" Then
      Me.treeView1.Nodes.RemoveAt(0)
   End If
End Sub

Remarks

To assign TreeNode objects to a specific location, or to retrieve them from the TreeNodeCollection, you can reference the collection object with a specific index value. The index value of the TreeNodeCollection is a zero-based index.

See also

• Count

Source:

TreeNodeCollection.cs

Source:

TreeNodeCollection.cs

Source:

TreeNodeCollection.cs

public:
 virtual property System::Windows::Forms::TreeNode ^ default[System::String ^] { System::Windows::Forms::TreeNode ^ get(System::String ^ key); };

public virtual System.Windows.Forms.TreeNode this[string key] { get; }

public virtual System.Windows.Forms.TreeNode? this[string? key] { get; }

member this.Item(string) : System.Windows.Forms.TreeNode

Default Public Overridable ReadOnly Property Item(key As String) As TreeNode

Parameters

Property Value

The TreeNode with the specified key.

Remarks

The Name property corresponds to the key for a TreeNode in the TreeNodeCollection.

The key comparison is not case-sensitive. If the key parameter is null or an empty string, the Item[] property returns null.