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protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
if (DropDownList1.SelectedItem.Value != "-1")
{
int period = int.Parse(DropDownList1.SelectedItem.Value);
string parsePeriod = GetPeriods(ConvertDatePeriods(period));
//print the converted period
Response.Write(parsePeriod);
}
}
public enum DatePeriods
{
Today,
Yesterday,
ThisWeek,
LastWeek,
ThisMonth
}
public DatePeriods ConvertDatePeriods(int intRepPeriod)
{
switch (intRepPeriod)
{
case 1:
return DatePeriods.Yesterday;
case 2:
return DatePeriods.ThisWeek;
case 3:
return DatePeriods.LastWeek;
case 4:
return DatePeriods.ThisMonth;
}
return DatePeriods.Today;
}
public string GetPeriods(DatePeriods periods)
{
DateTime referenceDate;
DateTime startDate = new DateTime();
DateTime endDate = new DateTime();
string dateString = string.Empty;
switch (periods)
{
case DatePeriods.Today:
referenceDate = DateTime.Now;
dateString = referenceDate.ToShortDateString();
break;
case DatePeriods.Yesterday:
referenceDate = DateTime.Now.AddDays(-1);
dateString = referenceDate.ToShortDateString();
break;
case DatePeriods.ThisWeek:
referenceDate = DateTime.Now;
startDate = referenceDate;
endDate = referenceDate.AddDays(6);
dateString = startDate.ToShortDateString() + " - " + endDate.ToShortDateString();
break;
case DatePeriods.LastWeek:
referenceDate = DateTime.Now.AddDays(-7);
startDate = referenceDate;
endDate = startDate.AddDays(6);
dateString = startDate.ToShortDateString() + " - " + endDate.ToShortDateString();
break;
case DatePeriods.ThisMonth:
referenceDate = DateTime.Now;
startDate = new DateTime(referenceDate.Year, referenceDate.Month, 1);
endDate = startDate.AddMonths(1).AddDays(-1);
dateString = startDate.ToShortDateString() + " - " + endDate.ToShortDateString();
break;
}
return dateString;
}
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