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patientman/PatientMan/Classes/clsCommon.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Security.Cryptography;
+namespace PatientMan
+{
+    internal static class   common
+    {
+        public static DateTime testdate { get; set; }
+        public static DateTime visitdate { get; set; }
+
+        public static DateTime MaxDate(DateTime a, DateTime b)
+        {
+            return a > b ? a : b;
+        }
+
+        public static DateTime MinDate(DateTime a, DateTime b)
+        {
+            return a > b ? b : a;
+        }
+
+        public static string MD5Hash(string text)
+        {
+            MD5 md5 = new MD5CryptoServiceProvider();
+
+            //compute hash from the bytes of text
+            md5.ComputeHash(ASCIIEncoding.ASCII.GetBytes(text));
+
+            //get hash result after compute it
+            byte[] result = md5.Hash;
+
+            StringBuilder strBuilder = new StringBuilder();
+            for (int i = 0; i < result.Length; i++)
+            {
+                //change it into 2 hexadecimal digits
+                //for each byte
+                strBuilder.Append(result[i].ToString("x2"));
+            }
+
+            return strBuilder.ToString();
+        }
+
+        public static int MonthDiff( DateTime EndDate,DateTime startDate)
+        {
+            int retVal = 0;
+
+            if (startDate.Month < EndDate.Month)
+            {
+                retVal = (startDate.Month + 12) - EndDate.Month;
+                retVal += ((startDate.Year - 1) - EndDate.Year) * 12;
+            }
+            else
+            {
+                retVal = startDate.Month - EndDate.Month;
+                retVal += (startDate.Year - EndDate.Year) * 12;
+            }
+            //// Calculate the number of years represented and multiply by 12
+            //// Substract the month number from the total
+            //// Substract the difference of the second month and 12 from the total
+            //retVal = (d1.Year - d2.Year) * 12;
+            //retVal = retVal - d1.Month;
+            //retVal = retVal - (12 - d2.Month);
+
+            return retVal;
+        }
+
+        public static int GetQuarter(DateTime date)
+        {
+            if (date.Month >= 4 && date.Month <= 6)
+                return 2;
+            else if (date.Month >= 7 && date.Month <= 9)
+                return 3;
+            else if (date.Month >= 10 && date.Month <= 12)
+                return 4;
+            else
+                return 1;
+
+        }
+    }
+}