for example I have to choose in datetimepicker May 16,2014 the messge box will pop out "This Week" and if I choose in datetimepicker May 20,2014 it will pop out "Next Week" and also June 20,2014 will pop out "Next Month".
I tried this..
System.Globalization.CultureInfo ci = System.Threading.Thread.CurrentThread.CurrentCulture;
DayOfWeek firstDayOfWeek = ci.DateTimeFormat.FirstDayOfWeek;
int offset = firstDayOfWeek - DateTime.Now.DayOfWeek;
DayOfWeek lastDayOfWeek = DateTime.Now.AddDays(offset).AddDays(6).DayOfWeek;
DateTime nextmonth = DateTime.Now.AddMonths(1);
DateTime input = DateTime.Now.AddDays(1);
input = dateTimePicker1.Value;
DateTime startOfWeek = DateTime.Today;
while (startOfWeek.DayOfWeek != firstDayOfWeek)
startOfWeek = startOfWeek.AddDays(-1);
DateTime endOfWeek = DateTime.Now;
while (endOfWeek.DayOfWeek != lastDayOfWeek)
endOfWeek = endOfWeek.AddDays(1);
bool thisWeek = input >= startOfWeek && input <= endOfWeek;
bool Thismonth = input == startOfWeek && input < endOfWeek;
bool nextMonth = input == nextmonth;
if (thisWeek == true)
{
label1.Text = "This Week";
}
else if (thisWeek == false)
{
label1.Text = "Next Week";
}
else if (nextMonth == true)
{
label1.Text = "Next Month";
}
Not too much of a problem to do. C# provides lots of Date Time Functions, but not "Is this week" although you could write an extension method for this.
System.Globalization.CultureInfo ci = System.Threading.Thread.CurrentThread.CurrentCulture;
DayOfWeek firstDayOfWeek = ci.DateTimeFormat.FirstDayOfWeek;
int offset = firstDayOfWeek - DateTime.Now.DayOfWeek;
DayOfWeek lastDayOfWeek = DateTime.Now.AddDays(offset).AddDays(6).DayOfWeek;
DateTime input = DateTime.Now.AddDays(1);
DateTime startOfWeek = DateTime.Today;
while (startOfWeek.DayOfWeek != firstDayOfWeek)
startOfWeek = startOfWeek.AddDays(-1);
DateTime endOfWeek = DateTime.Now;
while (endOfWeek.DayOfWeek != lastDayOfWeek)
endOfWeek = endOfWeek.AddDays(1);
Console.WriteLine("Week starts: " + startOfWeek);
Console.WriteLine("Week ends: " + endOfWeek);
Console.WriteLine("Input was: " + input);
Console.Write("Is input this week? ");
bool thisWeek = input >= startOfWeek && input <= endOfWeek;
Console.WriteLine(thisWeek);
Related
void SaveKurByDayAsync(DateTime firstDay , DateTime lastDay)
{
List<DateTime> dateList = new();
for (DateTime date = firstDay; date <= lastDay; date = date.AddDays(1))
{
dateList.Add(date);
}
foreach (DateTime date in dateList)
{
string day = date.Day.ToString();
string year = date.Year.ToString();
string month = date.Month.ToString();
if (int.Parse(month) < 10)
month = "0" + month;
if (int.Parse(day) < 10)
day = "0" + day;
string format = null;
if (date == DateTime.Today)
format = "https://www.tcmb.gov.tr/kurlar/today.xml";
format = "https://www.tcmb.gov.tr/kurlar/" + year + month + "/" + day + month + year + ".xml";
List<XElement> exchangeList = XElement.Load(format).Elements().ToList();
foreach (XElement exchangeItem in exchangeList)
{
Console.WriteLine(decimal.Parse(exchangeItem.Element("ForexBuying").Value, NumberStyles.Number, CultureInfo.InvariantCulture));
}
}
}
I have a method that gets exchange rate information published in xml format every day. But on public holidays xml is not published here and I get NotFound error in 'Load' method. I want to skip that day and move on to the next day, but I couldn't figure it out.
I'm trying to output the dates of all Mondays this year, but my if element won't work with the conditions I'm giving it.
This is my code:
static void Main(string[] args)
{
var dagEtt = new DateTime(DateTime.Now.Year, 1, 1);
while (dagEtt <= DateTime.MaxValue)
{
if (dagEtt == DayOfWeek.Monday)
Console.WriteLine(dagEtt);
dagEtt = dagEtt.AddDays(1);
}
}
I changed your code a little bit
var start = new DateTime(DateTime.UtcNow.Year, 1, 1);
var end = start.AddYears(1);
while (start < end)
{
if (start.DayOfWeek == DayOfWeek.Monday)
{
Console.WriteLine(start);
start = start.AddDays(7);
}
else
start = start.AddDays(1);
}
You can calculate the first Monday of the year using the % operator. This greatly simplifies your loop.
static void Main(string[] args)
{
int year = DateTime.Now.Year;
DateTime startDate = FirstMonday(year);
while (startDate.Year == year)
{
Console.WriteLine(startDate);
startDate = startDate.AddDays(7);
}
}
https://stackoverflow.com/a/5665161/3194005
public static DateTime FirstMonday(int year)
{
var firstDay = new DateTime(year, 1, 1);
return new DateTime(year, 1, (8 - (int)firstDay.DayOfWeek) % 7 + 1);
}
I am looking for a solution about how to get all of my int Parses within one line. At the moment when I start my program I have to enter day, month and year. It is all done line by line. I want a solution or method where this does all of my parsing within one line and within a format of "dd/MM/yyyy".
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace date
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("please enter date as dd/MM/yyyy");
int day;
int month;
int year;
day = int.Parse(Console.ReadLine());
month = int.Parse(Console.ReadLine());
year = int.Parse(Console.ReadLine());
Date i = new Date(day, month, year);
Console.WriteLine("{0}/{1}/{2}", i.day, i.month, i.year);
Console.ReadLine();
}
class Date
{
public int month; // 1-12
public int day; // 1-31 depending on month
int value = 1;
public int year
{
get;
private set;
}
public Date(int day, int month, int year)
{
this.day = day;
this.month = month;
this.year = year;
}
public int GetYear()
{
return year;
}
public void SetYear()
{
if (value > 1900 && value <= 2020)
year = value;
else
throw new ArgumentOutOfRangeException("year", value, "out of bounds");
}
private int Month
{
get { return month; }
set
{
if (value > 0 && value <= 12)
month = value;
else
throw new ArgumentOutOfRangeException("Month", value, "Month must be 1-12");
}
}
public int GetDay()
{
return day;
}
public void SetDay()
{
int[] days = { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
if (value > 0 && value <= days[month])
day = value;
else if (month == 2 && value == 29 &&
year % 400 == 0 || (year % 4 == 0 && year % 100 != 0))
day = value;
else
throw new ArgumentOutOfRangeException("days", value, "day is out of range");
}
}
}
}
You can use DateTime.Parse/TryParse or DateTime.ParseExact/TryParseExact:
string line = Console.ReadLine();
DateTime dt;
bool validDate = DateTime.TryParseExact(line,"dd/MM/yyyy", DateTimeFormatInfo.InvariantInfo,DateTimeStyles.None, out dt);
if(validDate)
Console.WriteLine(dt.ToLongDateString()); // now correctly initialized
With this format also DateTime.Parse/DateTime.TryParse works:
validDate = DateTime.TryParse(line, DateTimeFormatInfo.InvariantInfo, DateTimeStyles.None, out dt);
I use DateTimeFormatInfo.InvariantInfo to prevent that your local date separator is used instead of /(in case it's different).
Once it is parsed to DateTime it's trivial to create your Date instance:
Date d = new Date(dt.Day, dt.Month, dt.Year);
If you do NOT want to use DateTime.(Try)Parse, you can add a parse method with a Regex in your Date class:
public static Date ParseFromString(string s)
{
//string s = "24/12/2015";
Regex r = new Regex(#"(\d+)[\/](\d+)[\/](\d+)");
Match m = r.Match(s);
if (m.Success)
{
return new Date(m.Groups[1], m.Groups[2], m.Groups[3]);
}
else
{
// throw exception
}
}
You can't parse dd/MM/yyyy formatted string to int because it is not a valid string.
You need to parse it to DateTime first and you can use it's properties to get it's day, month and year as a numbers.
For example;
Console.WriteLine("please enter date as dd/MM/yyyy");
DateTime dt = DateTime.ParseExact(Console.ReadLine(), "dd/MM/yyyy",
CultureInfo.InvariantCulture);
int day = dt.Day;
int month = dt.Month;
int year = dt.Year;
Or you can use TryParseExact if you don't wanna throw exception if input is not dd/MM/yyyy format.
I am not wanting to use the preset DateTime class but I am using my
own "Date" class
If so, after you parse it, you can create your Date class instance with Date(int day, int month, int year) constructor based on this dt value as;
Date myDt = new Date(dt.Day, dt.Month, dt.Year);
I just want to know on how to compute DateTime without including weekends (currently making a library system). The library is not open during weekends that is why i need to calculate the date that will not include weekends.
Ex.
03/13/15 = friday and im borrowing it for 5 days. So, the return date should be in 03/20/15= friday( because i didnt include the weekends)
Can you please tell me or give me some ideas? Thanks!
EDIT: ( The program suddenly freezes when i type a number)
int days = 0;
DateTime deyt = DateTime.Now;
rd.Text = deyt.ToString("MM/dd/yy");
DateTime dt = deyt.AddDays(int.Parse(textBox3.Text));
DateTime span = deyt;
while (span < dt.AddDays(1))
{
if (span.DayOfWeek != DayOfWeek.Saturday && span.DayOfWeek != DayOfWeek.Sunday)
{
days++;
span = span.AddDays(1);
bd.Text = days.ToString("MM/dd/yy");
}
}
If you have a list of DateTimes you can filter out the weekend dates:
public static List<DateTime> GetDatesWithoutWeekends(List<DateTime> dates)
{
return
dates.Where(date => (date.DayOfWeek != DayOfWeek.Saturday && date.DayOfWeek != DayOfWeek.Sunday))
.ToList();
}
DateTime date = DateTime.Now // Set your Date
if (date.DayOfWeek != DayOfWeek.Saturday && date.DayOfWeek != DayOfWeek.Sunday)
{
//TODO
}
There are far more efficient ways of doing this for large numbers of days, but if your code is only ever going to deal with small values, you can just use:
static DateTime AddDaysExcludingWeekends(DateTime start, int days)
{
// Do you need this?
if (days < 0)
{
throw new ArgumentException("Not implemented yet...");
}
DateTime current = start;
for (int i = 0; i < days; days++)
{
current = current.AddDays(1);
if (current.DayOfWeek == DayOfWeek.Sunday ||
current.DayOfWeek == DayOfWeek.Saturday)
{
// Effectively force "go round again" behaviour.
i--;
}
}
return current;
}
Or an alternative approach:
static DateTime AddDaysExcludingWeekends(DateTime start, int days)
{
// Do you need this?
if (days < 0)
{
throw new ArgumentException("Not implemented yet...");
}
DateTime current = start;
for (int i = 0; i < days; days++)
{
// Loop at least once, and keep going until we're on
// a weekday.
do
{
current = current.AddDays(1);
}
while (current.DayOfWeek == DayOfWeek.Sunday ||
current.DayOfWeek == DayOfWeek.Saturday);
}
return current;
}
Note that if you pass in days=0, that will return the original date even if it is on a weekend. It's not clear whether or not you want that behaviour, or whether it should skip to the Monday.
This is your code... Try..
int days = 0;
DateTime deyt = DateTime.Now;
DateTime dt = deyt.AddDays(int.Parse(textBox3.Text));
DateTime span = deyt;
while (span <= dt)
{
if (span.DayOfWeek != DayOfWeek.Saturday && span.DayOfWeek != DayOfWeek.Sunday)
{
days++;
bd.Text = days.ToString();
Console.WriteLine(span.ToString("MM/dd/yy"));
}
span = span.AddDays(1);
}
I just want to know on how to compute DateTime without including weekends (currently making a library system). The library is not open during weekends that is why i need to calculate the date that will not include weekends.
Ex.
03/13/15 = friday and im borrowing it for 5 days. So, the return date should be in 03/20/15= friday( because i didnt include the weekends)
Can you please tell me or give me some ideas? Thanks!
EDIT: ( The program suddenly freezes when i type a number)
int days = 0;
DateTime deyt = DateTime.Now;
rd.Text = deyt.ToString("MM/dd/yy");
DateTime dt = deyt.AddDays(int.Parse(textBox3.Text));
DateTime span = deyt;
while (span < dt.AddDays(1))
{
if (span.DayOfWeek != DayOfWeek.Saturday && span.DayOfWeek != DayOfWeek.Sunday)
{
days++;
span = span.AddDays(1);
bd.Text = days.ToString("MM/dd/yy");
}
}
If you have a list of DateTimes you can filter out the weekend dates:
public static List<DateTime> GetDatesWithoutWeekends(List<DateTime> dates)
{
return
dates.Where(date => (date.DayOfWeek != DayOfWeek.Saturday && date.DayOfWeek != DayOfWeek.Sunday))
.ToList();
}
DateTime date = DateTime.Now // Set your Date
if (date.DayOfWeek != DayOfWeek.Saturday && date.DayOfWeek != DayOfWeek.Sunday)
{
//TODO
}
There are far more efficient ways of doing this for large numbers of days, but if your code is only ever going to deal with small values, you can just use:
static DateTime AddDaysExcludingWeekends(DateTime start, int days)
{
// Do you need this?
if (days < 0)
{
throw new ArgumentException("Not implemented yet...");
}
DateTime current = start;
for (int i = 0; i < days; days++)
{
current = current.AddDays(1);
if (current.DayOfWeek == DayOfWeek.Sunday ||
current.DayOfWeek == DayOfWeek.Saturday)
{
// Effectively force "go round again" behaviour.
i--;
}
}
return current;
}
Or an alternative approach:
static DateTime AddDaysExcludingWeekends(DateTime start, int days)
{
// Do you need this?
if (days < 0)
{
throw new ArgumentException("Not implemented yet...");
}
DateTime current = start;
for (int i = 0; i < days; days++)
{
// Loop at least once, and keep going until we're on
// a weekday.
do
{
current = current.AddDays(1);
}
while (current.DayOfWeek == DayOfWeek.Sunday ||
current.DayOfWeek == DayOfWeek.Saturday);
}
return current;
}
Note that if you pass in days=0, that will return the original date even if it is on a weekend. It's not clear whether or not you want that behaviour, or whether it should skip to the Monday.
This is your code... Try..
int days = 0;
DateTime deyt = DateTime.Now;
DateTime dt = deyt.AddDays(int.Parse(textBox3.Text));
DateTime span = deyt;
while (span <= dt)
{
if (span.DayOfWeek != DayOfWeek.Saturday && span.DayOfWeek != DayOfWeek.Sunday)
{
days++;
bd.Text = days.ToString();
Console.WriteLine(span.ToString("MM/dd/yy"));
}
span = span.AddDays(1);
}