Set a date in an InfoPath form to null

Question

I'm trying to write an InfoPath form from code.

I'm working with the xml of a form, and when I write a date it gives me no error but when I open the form in SharePoint and click on Save, it says that the dates are not correct, exactly it says:

Date Field "Only date allowed"

Note: I have tried with different formats and even that the format is the same that is showed if you choose a correct date.

Note: I use to write the xml element the next code:

writer.WriteElementString("my", "EntryDate",null, "");

Answer 1

Check the properties of the date control. Set data type to Text (String) and change format to XML (Click format button and select "None" option.

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