How to Show a Tooltip on a WPF Control When it is Disabled

By Michael Detras

By default, tooltips are not shown when a control is disabled. This can be changed by using ToolTipService.

Use the ShowOnDisabled attached property of the ToolTipService.

<TextBox
    ToolTip="Show Me When Disabled"
     IsEnabled="False"
    ToolTipService.ShowOnDisabled="True"/>

Related FAQs

In WPF, you can display the validation error in a tooltip using a trigger. We can also add a red asterisk beside the control to indicate the error.
How to Show a Tooltip on a WPF Control When it is Disabled  (1416 Views)