SqlDateTime overflow Error

Hi,
I am having an issue regarding DateTime, please refer to this error “SqlDateTime overflow. Must be between 1/1/1753 AM and 12/31/9999 11:59:59PM” I've checked any form of solutions in google but nothing comes out correctly.
Code:
DateTime Bday = DateTime.MinValue;
DateTime Wedann = DateTime.MinValue;
bool _bdate = DateTime.TryParse(tbdate.Text, out Bday);
bool _weddate = DateTime.TryParse(tbwedaniv.Text, out Wedann);

How can we resolve this error?
Please help. Thanks.
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