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DataGridCheckBoxColumn.IsThreeState Property

Gets or sets a value that indicates whether the hosted CheckBox controls enable three states or two.

Namespace:  System.Windows.Controls
Assembly:  PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
public bool IsThreeState { get; set; }
<object IsThreeState="bool" .../>

Property Value

Type: System.Boolean
true if the hosted controls support three states; false if they support two states. The default is false.

The DataGridCheckBoxColumn.IsThreeState property lets you use a nullable Boolean as the data type and has the same functionality as the ToggleButton.IsThreeState property on CheckBox.

The three states for the ToggleButton.IsChecked property of the CheckBox control are true, false, and null.

.NET Framework

Supported in: 4.5.1, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Windows Phone 8.1, Windows Phone 8, 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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