What is the Date Picker Control Default Value?

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Answer

Date Picker control is initialized with a value of 1/1/0001 12:00:00 AM, therefore, IsNullOrEmpty(DatePicker) does not work to check whether a user entered the value in the Date Picker control or left it empty.

Use the following code in the expression editor to check if Date Picker control has value:

Iif(GetYear([DatePicker]) == '1', true , false)

When faced with a null or empty situation that’s not working the following can assist:

  1. Create a reference label to use as a test
  2. For the Value Expression use:
    Iif(IsNullOrEmpty(ToStr([TR1070Object])), '' , ToStr([TR1070Object]))
  3. Which will return the current value of said control to the screen for you to view what it contains.
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