DateTime get last day of month
The following asp.net c# example code demonstrate us how can we get last
day of a month programmaticallyat run time in an asp.net application. In
this example code, we will see how can we get last day of a month froma
specified DateTime object.
By default, .net framework's DateTime class has no method or property to get last day of a month. So, we need to applyfew techniques to get last day of a month from a given date. At first, we need to extract the month from a given date. Thenwe need to get the last day of extracted month.
We applied the following techniques to get the last day of a month; first, we add one month with the given date by usingDateTime.AddMonths() method. Then we create a new DateTime variable by using the month added DateTime object's year, monthand first day (day number 1) such as 2014/12/1(DateTime.Year/DateTime.Month/1).
So, we get a new DateTime object which represent first day of a month. Next, we subtract one day from this newlycreated DateTime object (first day of month). It returns the last day of previous month,when we subtract one day from first day of a month.
Finally, we get the last day of a month from a specified DateTime object. Because, at first we added one month with givenDateTime object.
By default, .net framework's DateTime class has no method or property to get last day of a month. So, we need to applyfew techniques to get last day of a month from a given date. At first, we need to extract the month from a given date. Thenwe need to get the last day of extracted month.
We applied the following techniques to get the last day of a month; first, we add one month with the given date by usingDateTime.AddMonths() method. Then we create a new DateTime variable by using the month added DateTime object's year, monthand first day (day number 1) such as 2014/12/1(DateTime.Year/DateTime.Month/1).
So, we get a new DateTime object which represent first day of a month. Next, we subtract one day from this newlycreated DateTime object (first day of month). It returns the last day of previous month,when we subtract one day from first day of a month.
Finally, we get the last day of a month from a specified DateTime object. Because, at first we added one month with givenDateTime object.
datetime-get-last-day-of-month.aspx
<%@ Page Language="C#" AutoEventWireup="true"%>
<!DOCTYPE html>
<script runat="server">
protected void Button1_Click(object sender, System.EventArgs e)
{
//initialize a datetime variable with today
DateTime today = DateTime.Today;
//create a datetime object to generate last day of month
DateTime tempDate = today.AddMonths(1);
DateTime tempDate2 = new DateTime(tempDate.Year,tempDate.Month,1);
DateTime lastDayOfMonth = tempDate2.AddDays(-1);
Label1.Text = "Today : " + today.ToLongDateString();
Label1.Text += "<br /><br />last day of month : ";
Label1.Text += lastDayOfMonth.ToLongDateString();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>c# example - datetime get last day of month</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h2 style="color:MidnightBlue; font-style:italic;">
c# example - datetime get last day of month
</h2>
<hr width="550" align="left" color="Gainsboro" />
<asp:Label
ID="Label1"
runat="server"
Font-Size="Large"
Font-Names="Comic Sans MS"
>
</asp:Label>
<br /><br />
<asp:Button
ID="Button1"
runat="server"
Text="get last day of month"
OnClick="Button1_Click"
Height="40"
Font-Bold="true"
/>
</div>
</form>
</body>
</html>
