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TreeNodeCollection.ContainsKey Method

.NET Framework 4

Other Versions

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)

Syntax

C++

Copy

public virtual bool ContainsKey(
	string key
)

Parameters

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.

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.

Version Information

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference

TreeNodeCollection Class

System.Windows.Forms Namespace

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