Clicking "shift" key in a textbox with CalendarExtender when focus is on it (for example, for selecting part of a date to replace it), a Javascript error is thrown.
Comments: I can't reproduce the behavior you described. Maybe this error is related with the specific Calendar settings. Please, provide a sample project for investigating.
Comments: I can't reproduce the behavior you described. Maybe this error is related with the specific Calendar settings. Please, provide a sample project for investigating.