private DateTime?GetValidStartDate(TextBox startDateTextBox)
{
DateTime startDate = DateTime.MinValue;
if (String.IsNullOrEmpty(startDateTextBox.Text))
{
return(startDate);
}
if (!DateTime.TryParse(startDateTextBox.Text, out startDate))
{
throw new ArgumentException("Starting Date format is incorrect, please use MM/DD/YYYY format (ex 08/22/2008)");
}
if (startDate <= MinDateTime ||
startDate >= MaxDateTime)
{
throw new ArgumentOutOfRangeException("StartingDate", String.Format("Starting Date format is incorrect, it must be between %0 and %1", MinDateTime.ToString(), MaxDateTime.ToString()));
}
return(startDate);
}
private DateTime?GetValidEndDate(TextBox endDateTextBox)
{
DateTime endDate = DateTime.Now;
if (String.IsNullOrEmpty(endDateTextBox.Text))
{
endDate = MaxDateTime;
}
else if (!DateTime.TryParse(endDateTextBox.Text, out endDate))
{
throw new ArgumentException("End Date format is incorrect, please use MM/DD/YYYY format (ex 04/21/2009)");
}
if (endDate < MinDateTime ||
endDate > MaxDateTime)
{
throw new ArgumentOutOfRangeException("Ending Date", String.Format("End Date format is incorrect, it must be between %0 and %1", MinDateTime.ToString(), MaxDateTime.ToString()));
}
return(endDate);
}