If you want to convert time 24 format To 12 am pm form in asp.net then you can try following method. You can write this method in common class in asp.net program then you can call this function by passing time variable in function parameter.
public static string convert24To12(string time)
{
if (time.IndexOf(":") == -1)
return time;
string appendstring = "AM";
string strHr = time.Substring(0, time.IndexOf(":"));
string strMin = time.Substring(time.IndexOf(":") + 1);
int intHr = Convert.ToInt16(strHr);
if (intHr > 12)
{
appendstring = "PM";
intHr -= 12;
}
if (intHr == 12)
{
appendstring = "PM";
}
else if (intHr == 0)
{
intHr = 0;
}
return ((intHr < 10) ? "0" : "") + intHr + ":" + strMin + " " + appendstring;
}