Set DateTimePicker start date always Monday C #

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Set DateTimePicker start date always Monday C #

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#1 by (3 votes)

2

I am developing a Windows Forms application in C #. I have a DateTimePicker that I will call dtp1 .

It happens that what I need is that this dtp1 always have the date on Monday of the current week.

That is,

If today is Jueves 06/10/2016 , the value of this dtp1 should be 03/10/2016 .
If we start the program with Miércoles 12/10/2016 , it should show 10/10/2016 .

c# windows-forms datetime visual-studio-2015

asked by Juan Manuel Villavicencio Tapi 06.10.2016 в 22:55

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1 answer

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score 3 · Answer 1

Well, you can convert the dt to Monday and then set it on the dtpicker

Translation of How can I get the DateTime for the start of the week?

Use an extension method. They are the answer to everything, you know! ;)

public static class DateTimeExtensions
{
    public static DateTime StartOfWeek(this DateTime dt, DayOfWeek startOfWeek)
    {
        int diff = dt.DayOfWeek - startOfWeek;
        if (diff < 0)
        {
            diff += 7;
        }
        return dt.AddDays(-1 * diff).Date;
    }
}

Which can be used as follows:

DateTime dt = DateTime.Now.StartOfWeek(DayOfWeek.Monday);//El que tu necesitas
DateTime dt = DateTime.Now.StartOfWeek(DayOfWeek.Sunday);