Preventing Tooltip Display for Error Content in RadDateTimePicker

Updated on Jul 4, 2025

Environment

Product	RadDateTimePicker for WPF
Version	2025.2.521

Description

I want to prevent the tooltip of the RadDateTimePicker control from showing when its content is set to Error.

Solution

To achieve this behavior, subscribe to the ParseDateTimeValue event of the RadDateTimePicker control. Check the IsParsingSuccessful property of the event arguments, and if it is false, set the IsTooltipOpen property of the control to false. Use the Dispatcher.BeginInvoke method to delay this logic.

Follow these steps:

1. Subscribe to the ParseDateTimeValue event of RadDateTimePicker.
2. Implement the logic to check IsParsingSuccessful in the event handler.
3. If IsParsingSuccessful is false, use Dispatcher.BeginInvoke to set IsTooltipOpen to false.

Example implementation:

csharp

    private void RadDateTimePicker_ParseDateTimeValue(object sender, ParseDateTimeEventArgs args)
    {
        if (!args.IsParsingSuccessful)
        {
            Dispatcher.BeginInvoke(new Action(() =>
            {
                this.dateTimePicker.IsTooltipOpen = false;
            }));
        }
    }

Attach the event handler to your RadDateTimePicker instance:

csharp

    this.dateTimePicker.ParseDateTimeValue += RadDateTimePicker_ParseDateTimeValue;

This approach prevents the tooltip from displaying when parsing the input fails.