DateTime.MinValue and SqlDateTime overflow

Question

I don\'t want to validate txtBirthDate so I want to pass DateTime.MinValue in database.

My code:

 if (txtBirthDate.Text == st         


        

Answer 1

Well... its quite simple to get a SQL min date

DateTime sqlMinDateAsNetDateTime = System.Data.SqlTypes.SqlDateTime.MinValue.Value;

Answer 2

Here is what you can do. Though there are lot many ways to achieve it.

DateTime? d = null;    
if (txtBirthDate.Text == string.Empty)
    objinfo.BirthDate = d;
else
    objinfo.BirthDate =  DateTime.Parse(txtBirthDate.Text);

Note: This will work only if your database datetime column is Allow Null. Else you can define a standard minimum value for DateTime d.

Answer 3

I am using this function to tryparse

public static bool TryParseSqlDateTime(string someval, DateTimeFormatInfo dateTimeFormats, out DateTime tryDate)
    {
        bool valid = false;
        tryDate = (DateTime)System.Data.SqlTypes.SqlDateTime.MinValue;
        System.Data.SqlTypes.SqlDateTime sdt;
        if (DateTime.TryParse(someval, dateTimeFormats, DateTimeStyles.None, out tryDate))
        {
            try
            {
                sdt = new System.Data.SqlTypes.SqlDateTime(tryDate);
                valid = true;
            }
            catch (System.Data.SqlTypes.SqlTypeException ex)
            {

            }
        }

        return valid;
    }

Answer 4

use extensions

public static class DateTimeExtensions
{
    public static DateTime MinValue(this DateTime sqlDateTime)
    {
        return new DateTime(1900, 01, 01, 00, 00, 00);
    }
}


DateTime date = DateTime.Now;
Console.WriteLine("Minvalue is {0} ", date.MinValue().ToShortDateString());