TreeNodeCollection.IndexOfKey(String) Method

Reference

Definition

Namespace:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

Important

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Returns the index of the first occurrence of a tree node with the specified key.

public:
 virtual int IndexOfKey(System::String ^ key);

public virtual int IndexOfKey (string key);

public virtual int IndexOfKey (string? key);

abstract member IndexOfKey : string -> int
override this.IndexOfKey : string -> int

Public Overridable Function IndexOfKey (key As String) As Integer

Parameters

key: String

The name of the tree node to search for.

Returns

Int32

The zero-based index of the first occurrence of a tree node with the specified key, if found; otherwise, -1.

Remarks

If IndexOfKey is called successively, the last returned index will be checked for a key match first, and if there is no match, the search starts at the beginning of the collection.

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

The key comparison is not case-sensitive. If key is null or an empty string, the Item[] property returns -1.

Applies to