TreeNodeCollection.ContainsKey Method (String)


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

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public virtual bool ContainsKey(
	string key


Type: System.String

The name of the TreeNode to search for.

Return Value

Type: System.Boolean

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

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.

.NET Framework
Available since 2.0
Return to top