Check For Valid Date

Recently I had to validate dates in a form specifically the date of visit and date of birth

This function will now check both for future date and do more checks for the date of visit, debug/helper information left in to better understand the function.

Function Code:

public bool bCheckDate(string sDate, int type)
	{
		bool bGoodDate = false;

		DateTime temp;
		if (DateTime.TryParse(sDate, out temp))
		{
			// if a valid date then proceed
			//	result.InnerHtml += "<br/>Valid Date: " + temp.ToString();

			DateTime todaydate = new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day); // Today

			if (type == 0)
			{
				bGoodDate = false;
				if (temp <= todaydate)
				{
					// Date is not a future date proceed
					bGoodDate = true;
				}
				else
				{
					// Date is a future date don't proceed
					bGoodDate = false;
				}
			}
			if (type == 1)
			{
				bGoodDate = false;
				DateTime highDate = new DateTime(DateTime.Now.Year, 01, 14); // 1-14-Current Year
				DateTime lowDate = new DateTime(DateTime.Now.Year, 01, 01); // 1-1-Current Year
				DateTime oldestDate = new DateTime(DateTime.Now.Year - 1, 01, 01); // 1-1-Previous Year

				if (temp <= todaydate)
				{
					// Submission date is not a future date proceed
					// result.InnerHtml += "<br/>Date of Visit is not a future date";

					if (todaydate >= lowDate && todaydate <= highDate)
					{
						// If today is within low and high allow for a visit date of the previous year
						// result.InnerHtml += "<br/>Today Within " + lowDate.ToString() + " and " + highDate.ToString();
						if (temp >= lowDate)
						{
							// if date of service is newer than or equal to low date no problem proceed
							// result.InnerHtml += "<br/>Date of Visit is newer than or equal to " + lowDate.ToString();
							bGoodDate = true;
						}
						else
						{
							// if date of service is older than low date allow up to 1 year ago.
							// result.InnerHtml += "<br/>Date of Visit is older than " + lowDate.ToString();
							if (temp >= oldestDate)
							{
								// if date of service is newer than or equal to oldest date no problem proceed
								// result.InnerHtml += "<br/>Date of Visit is newer than or equal to " + oldestDate.ToString();
								bGoodDate = true;
							}
							else
							{
								// if date of service is older than oldest date
								// result.InnerHtml += "<br/>Date of Visit is older than " + oldestDate.ToString();
								bGoodDate = false;
							}
						}
					}
					else
					{
						// If today is not within low and high dates visit date of the form must be of current year
						//	result.InnerHtml += "<br/>Today Is Not Within " + lowDate.ToString() + " and " + highDate.ToString();
						if (temp >= lowDate)
						{
							// if date of service is newer than or equal to low date no problem proceed
							//result.InnerHtml += "<br/>Date of Visit is newer than or equal to " + lowDate.ToString();
							bGoodDate = true;
						}
						else
						{
							// if date of service is older than low date
							//	result.InnerHtml += "<br/>Date of Visit is older than " + oldestDate.ToString();
							bGoodDate = false;
						}
					}
				}
				else
				{
					// Submission date is a future date and shouldn't proceed
					// result.InnerHtml += "<br/>Date of Visit is a future date";
					bGoodDate = false;
				}
			}
		}
		else
		{
			// if date of visit is not valid send error
			// result.InnerHtml += "Date of Visit: Invalid Date";
			bGoodDate = false;
		}


		return bGoodDate;
	}

Function Use:

if (bCheckDate(txtMemDOB.Value, 0) == true) // validate a good date for DOB
{
// do something
}
else
{
// don't do something
}

if (bCheckDate(txtMemDOS.Value, 1) == true) // validate a good date for DOS
{
// do something
}
else
{
// don't do something
}