CheckBox and IsChecked property

[Stanislav]

Hello all,

The 'IsChecked' property in CheckBox is of bool? type. What is it for? I would have thought that it is of bool type.

if (checkBox.IsChecked.HasValue && checkBox.IsChecked.Value)
    checkBox.Check(true);

Is it really worth it?

Kind Regards,
Stanislav Hordiyenko

[Boyan Boev]

Hello Stanislav,

When the IsThreeState property is set to true, a user can click a CheckBox to pick three possible states: checked with value of the IsChecked true, unchecked with value of the IsChecked false and indeterminate with value of the IsChecked null.

For more information please read this article.

Hope this helps.

Regards,
Boyan Boev
the Telerik team