Showing Dates in a data table

See more:

C#

C#4.0

Please look the following codes in c# :
I have written the following codes to get dates that the user provides. User provide a date range and I want to add 7 days and to show every the dates for every next every 7 days from the date range

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {
        DateTime dtFromDate = new DateTime();
        dtFromDate = Convert.ToDateTime("01/01/2013");
        DateTime dtToDate = new DateTime();
        dtToDate = Convert.ToDateTime("01/31/2013");
        DateTime StartDate = new DateTime();
        Label1.Text = "";
        while (dtFromDate <= dtToDate)
        {           
            if (dtFromDate == Convert.ToDateTime("01/08/2013"))
            {
               dtFromDate = dtFromDate.AddDays(1);
            }
            else
            {
                Label1.Text += dtFromDate.ToString();
                dtFromDate = dtFromDate.AddDays(7);
            }         
        }                    
    }
}

And the result is as follows :

1/1/2013 12:00:001/9/2013 12:00:00 AM1/16/2013 12:00:00 AM1/23/2013 12:00:00 AM1/30/2013 12:00:00 AM

But my requirement is to assign the result in a data table. Then I will generate crystal report.