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ToolBar.ToolBarButtonCollection.ContainsKey Method

Determines if a ToolBarButton with the specified key is contained in the collection.

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

public virtual bool ContainsKey(
	string key
)

Parameters

key
Type: System.String

The name of the ToolBarButton to search for.

Return Value

Type: System.Boolean
true to indicate a ToolBarButton with the specified key is found; otherwise, false.

The Name property corresponds to the key for a ToolBarButton in the ToolBar.ToolBarButtonCollection.

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

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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