CODEWITHSUNDEEP
c#.netvb.netdatetime
XK8ER
XK8ER

Reputation: 780

Compare two dates with a range

is it possible to have something that can compare two dates in this format.. example today "Sep 30, 2013" and one week ago "Sep 22, 2013" if its within this range say "good" if older then say "not good" how can I make this in C# or vb.net

Upvotes: 2

Views: 1008

Answers (4)

XK8ER
XK8ER

Reputation: 780

thanks to all users who helped me here.. this is the final code that I am using..

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

    Dim fileDate As Date = Convert.ToDateTime("Sep 25, 2013")
    Dim rightNow As Date = Convert.ToDateTime(Date.Now.ToString("MMM dd, yyyy"))
    Dim lastWeek = rightNow.AddDays(-7)

    If rightNow >= fileDate And lastWeek <= fileDate Then

        Debug.Print("its new")
    Else
        Debug.Print("too old")
    End If
End Sub

Upvotes: 0

Sergey Berezovskiy
Sergey Berezovskiy

Reputation: 236328

You can use this generic Range class for checking some comparable value (like DateTime) falls into range:

public class Range<T>
    where T : IComparable
{
    public Range(T from, T to)
    {
        if (from.CompareTo(to) > 0)
            throw new ArgumentException("From should not be greater than To");

        From = from;
        To = to;
    }

    public T From { get; private set; }
    public T To { get; private set; }

    public bool Contains(T value)
    {
        return value.CompareTo(From) >= 0 && value.CompareTo(To) <= 0;
    }
    // other methods like Intersects etc
}

Usage:

var today = DateTime.Today;
var range = new Range<DateTime>(today.AddDays(-7), today);
DateTime date = new DateTime(2013, 9, 25);

if (range.Contains(date))
   // say good

Upvotes: 0

Ryan Schlueter
Ryan Schlueter

Reputation: 2221

if(date1 >= Convert.ToDateTime("Sep 22, 2013") && date1 <= Convert.ToDateTime("Sep 30, 2013"))
{
good
}
else
{
bad
}

Upvotes: 0

Kamil Budziewski
Kamil Budziewski

Reputation: 23117

If difference between dates is smaller than 7 days, it will print "good" otherwise "Not good"

var ok = (firstDate-secondDate).TotalDays < 7? "good": "Not good";
Console.WriteLine(ok);

TotalDays is double so you can check if differnce is in full days, use Days if you want completed days difference as int

Read more about TimeSpan and it's properties.

Upvotes: 4

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