#852 – Setting a Three-State CheckBox to an Indeterminate Value

A three-state CheckBox can take on one of three values: true, false, or indeterminate.  You can use data binding to get/set the value of a three-state CheckBox, binding the control to a nullable bool.

You can also explicitly set the value of a CheckBox, in either XAML or code.

To set a CheckBox to an indeterminate value in code, just set its IsChecked property to null.

            chkPie.IsChecked = null;

852-001
To set a CheckBox to an indeterminate value in XAML, set its IsChecked property to {x:Null}.

        <CheckBox Name="chkPie" Content="I Like Pie" IsThreeState="True"
                  IsChecked="{x:Null}"/>

About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.

One Response to #852 – Setting a Three-State CheckBox to an Indeterminate Value

  1. Pingback: Dew Drop – June 28, 2013 (#1,375) | Alvin Ashcraft's Morning Dew

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