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} |
Originally Posted on February 28, 2013
Last Updated on October 26, 2015
Last Updated on October 26, 2015
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