I have a checkbox in a Telerik GridViewDataColumn with its IsChecked binding set to a data source that could be 1, 0, or Null.
When the value of the data element is 1, it displays a check.
When the value of the data element is 0, it displays an unchecked checkbox.
But when the value of the data element is Null, it displays an X. That's an issue.
How can I change the display to also show an unchecked checkbox when the value is Null? (It needs to look the same way that it looks when the data element value is 0)