C # Summary of the time Timehelper class

Using System;

Namespace Dotnet.utilities
{
<summary>
Time class
1, secondtominute (int Second) convert seconds to minutes
</summary>
public class Timehelper
{
<summary>
Formats the time into a month-by-day format and returns the current system time if the time is null
</summary>
<param name= "DT" > Month and Day separators </param>
<param name= "Separator" ></param>
<returns></returns>
public string getformatdate (DateTime dt, char Separator)
{
if (dt! = null &&!dt. Equals (DBNull.Value))
{
string tem = string. Format ("Yyyy{0}mm{1}dd", Separator, Separator);
Return dt. ToString (TEM);
}
Else
{
Return Getformatdate (DateTime.Now, Separator);
}
}
<summary>
Formats the time in seconds and minutes, and returns the current system time if the time is null
</summary>
<param name= "DT" ></param>
<param name= "Separator" ></param>
<returns></returns>
public string Getformattime (DateTime dt, char Separator) {
if (dt! = null &&!dt. Equals (DBNull.Value))
{
string tem = string. Format ("Hh{0}mm{1}ss", Separator, Separator);
Return dt. ToString (TEM);
}
Else
{
Return Getformatdate (DateTime.Now, Separator);
}
}
<summary>
Convert seconds to minutes
</summary>
<returns></returns>
public static int Secondtominute (int Second)
{
decimal mm = (decimal) ((decimal) Second/(decimal) 60);
Return Convert.ToInt32 (math.ceiling (mm));
}

#region return to the last day of a certain month
<summary>
Returns the last day of the month of a year
</summary>
<param name= "Year" > Years </param>
<param name= "Month" > Month </param>
<returns> Day </returns>
public static int Getmonthlastdate (int year, int month)
{
DateTime lastday = new DateTime (year, Month, New System.Globalization.GregorianCalendar (). Getdaysinmonth (year, month));
int day = Lastday.day;
Return day;
}
#endregion

#region Return time difference
public static string DateDiff (DateTime DateTime1, datetime DateTime2)
{
string dateDiff = null;
Try
{
TimeSpan ts1 = new TimeSpan (datetime1.ticks);
TimeSpan ts2 = new TimeSpan (datetime2.ticks);
TimeSpan ts = ts1. Subtract (TS2). Duration ();
TimeSpan ts = datetime2-datetime1;
if (TS. Days >= 1)
{
DateDiff = DateTime1.Month.ToString () + "month" + DateTime1.Day.ToString () + "Day";
}
Else
{
if (TS. Hours > 1)
{
DateDiff = ts. Hours.tostring () + "hours ago";
}
Else
{
DateDiff = ts. Minutes.tostring () + "Minutes ago";
}
}
}
Catch
{ }
return DateDiff;
}
#endregion

#region get a two-day interval
<summary>
Get a two-date interval
</summary>
<param name= "DateTime1" > Date one. </param>
<param name= "DateTime2" > Date two. </param>
<returns> date interval TimeSpan. </returns>
public static TimeSpan DateDiff2 (DateTime DateTime1, datetime DateTime2)
{
TimeSpan ts1 = new TimeSpan (datetime1.ticks);
TimeSpan ts2 = new TimeSpan (datetime2.ticks);
TimeSpan ts = ts1. Subtract (TS2). Duration ();
return TS;
}
#endregion

#region Format Date Time
<summary>
Format Date Time
</summary>
<param name= "dateTime1" > Date Time </param>
<param name= "Datemode" > Display mode </param>
Date of <returns>0-9 mode </returns>
public static string FormatDate (DateTime dateTime1, String datemode)
{
Switch (Datemode)
{
Case "0":
Return datetime1.tostring ("Yyyy-mm-dd");
Case "1":
Return datetime1.tostring ("Yyyy-mm-dd HH:mm:ss");
Case "2":
Return datetime1.tostring ("Yyyy/mm/dd");
Case "3":
return datetime1.tostring ("yyyy mm month DD day");
Case "4":
Return datetime1.tostring ("Mm-dd");
Case "5":
Return datetime1.tostring ("Mm/dd");
Case "6":
Return datetime1.tostring ("MM month DD day");
Case "7":
Return datetime1.tostring ("yyyy-mm");
Case "8":
Return datetime1.tostring ("yyyy/mm");
Case "9":
return datetime1.tostring ("yyyy mm month");
Default
return datetime1.tostring ();
}
}
#endregion

#region Get random Dates
<summary>
Get a random date
</summary>
<param name= "time1" > Start date </param>
<param name= "time2" > End Date </param>
Random dates between <returns> interval dates </returns>
public static datetime getrandomtime (DateTime time1, datetime time2)
{
Random random = new random ();
DateTime mintime = new DateTime ();
DateTime maxtime = new DateTime ();

System.TimeSpan ts = new System.TimeSpan (time1. Ticks-time2. Ticks);

Gets the number of seconds between two time intervals
Double Dtotalsecontds = ts. TotalSeconds;
int Itotalsecontds = 0;

if (Dtotalsecontds > System.Int32.MaxValue)
{
Itotalsecontds = System.Int32.MaxValue;
}
else if (Dtotalsecontds < System.Int32.MinValue)
{
Itotalsecontds = System.Int32.MinValue;
}
Else
{
Itotalsecontds = (int) Dtotalsecontds;
}

if (Itotalsecontds > 0)
{
Mintime = time2;
MaxTime = time1;
}
else if (Itotalsecontds < 0)
{
Mintime = time1;
MaxTime = time2;
}
Else
{
return time1;
}

int maxValue = Itotalsecontds;

if (Itotalsecontds <= System.Int32.MinValue)
MaxValue = System.Int32.MinValue + 1;

int i = random. Next (System.Math.Abs (MaxValue));

return mintime.addseconds (i);
}
#endregion
}
}

C # Summary of the time Timehelper class