TreeNodeCollection.ContainsKey(String) Method

Definition

Namespace:

System.Windows.Forms

Assembly:

System.Windows.Forms.dll

Source:

TreeNodeCollection.cs

Determines whether the collection contains a tree node with the specified key.

public:
 virtual bool ContainsKey(System::String ^ key);

public virtual bool ContainsKey (string? key);

abstract member ContainsKey : string -> bool
override this.ContainsKey : string -> bool

Public Overridable Function ContainsKey (key As String) As Boolean

Parameters

key

String

The name of the TreeNode to search for.

Returns

Boolean

true to indicate the collection contains a TreeNode with the specified key; otherwise, false.

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 false.