Replacing a DateTime.MinValue in a DataGridView

Question

I am working on a name record application and the information is stored in a SQLite database. All columns in the database are TEXT types, except for the date of birth column

Answer 1

if (yourDateOfBirth != null)
{
    Convert.ToDate(yourDateOfBirth) == DateTime.MinValue
}

Answer 2

There are already answers that should achieve what you want; but I wonder why you don't put NULL in the database to start with? In sqlite3, "datetime" is more or less just a string, (there is nothing special about a datetime column since sqlite3 is all about just type afinity, not type binding), so you just insert NULL in that column. And in case you want to have the MinValue of datetime when you query, you can easily execute a query like

select coalesce(your_datetime_column,'01/01/0001') from your_table