What is the DB field type and if the DB field type is text, what is the date format? Or what is the date format returned from the dataset?
It should use a format supported by RTL variants method: VarToDateTime()
There is no problem when I use other Tdate component
For example, your component AdvDBDateTimePicker works well
I can type in the edit box or choose a date in the calender
But AdvDBDateTimePicker does not have week number and can't handle empty date ?
I cannot reproduce a problem here, so please provide sufficient details to allow us to see this issue here and investigate.
Here is our test project that works fine here: Project1.zip (66.2 KB)
That is a gracefully handled exception that is caught by the IDE when running in debug mode. The exception is coming from the attempt to convert an incorrect formatted date string (i.e. it is not completed yet) to a date.
You can ignore this exception during debugging.