Calculate Days difference between two dates in C# and VB.Net

Hi Tevin,

The answer is obviously correct. Since it inclusive both dates so returns a day less in difference. So add 1 to get your result.

C#

protected void Page_Load(object sender, EventArgs e)
{
    DateTime dt1 = new DateTime(2019, 08, 01);
    DateTime dt2 = new DateTime(2019, 08, 31);
    TimeSpan ts = dt2.Subtract(dt1);
    Response.Write(ts.TotalDays + 1);
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    Dim dt1 As DateTime = New DateTime(2019, 8, 1)
    Dim dt2 As DateTime = New DateTime(2019, 8, 31)
    Dim ts As TimeSpan = dt2.Subtract(dt1)
    Response.Write(ts.TotalDays + 1)
End Sub

Output

31