public string Valid(string CustomerRegisteredDate,
string Name,
string productId,
string point)
{
String Error = "";
DateTime DateTemp;
DateTime Minimum;
if (productId.Length == 0)
{
Error = Error + "The ProductId may not be blank: ";
}
if (point.Length == 0)
{
Error = Error + "The point may not be negative: ";
}
if (Name.Length == 0)
{
Error = Error + "The name may not be blank: ";
}
if (Name.Length > 50)
{
Error = Error + "The name must contain less than 51 characters: ";
}
try
{
DateTemp = Convert.ToDateTime(CustomerRegisteredDate);
Minimum = DateTime.Now.Date;
Minimum = Minimum.AddMonths(-5);
if (DateTemp > DateTime.Now.Date)
{
Error = Error + "the date cannot be in the future: ";
}
if (DateTemp < Minimum)
{
Error = Error + "the date cannot be in the very past: ";
}
}
catch
{
Error = Error + "the date was not a valid date: ";
}
return(Error);
}
