Diganta Kumar

Posted by: Diganta Kumar | December 12, 2009

Date Formatting in C#

Cheat sheet

<%= String.Format("{specifier}", DateTime.Now) %>

Specifier	Description	Output
d	Short Date	08/04/2007
D	Long Date	08 April 2007
t	Short Time	21:08
T	Long Time	21:08:59
f	Full date and time	08 April 2007 21:08
F	Full date and time (long)	08 April 2007 21:08:59
g	Default date and time	08/04/2007 21:08
G	Default date and time (long)	08/04/2007 21:08:59
M	Day / Month	08 April
r	RFC1123 date	Sun, 08 Apr 2007 21:08:59 GMT
s	Sortable date/time	2007-04-08T21:08:59
u	Universal time, local timezone	2007-04-08 21:08:59Z
Y	Month / Year	April 2007
dd	Day	08
ddd	Short Day Name	Sun
dddd	Full Day Name	Sunday
hh	2 digit hour	09
HH	2 digit hour (24 hour)	21
mm	2 digit minute	08
MM	Month	04
MMM	Short Month name	Apr
MMMM	Month name	April
ss	seconds	59
tt	AM/PM	PM
yy	2 digit year	07
yyyy	4 digit year	2007
:	seperator, e.g. {0:hh:mm:ss}	09:08:59
/	seperator, e.g. {0:dd/MM/yyyy}	08/04/2007

How to set fixed width web page sitting in centre of window for IE6x, Firefox, Safari and Chrome

Got a fixed width website and can’t get it to centrally align in the window in Internet Explorer? Or you can get it to centrally align in IE but not in any other browser? Fear not, it’s not your fault! Unfortunately, the correct way of centrally aligning content through CSS doesn’t actually work in IE:

#cim_page-wrapper {
width: 66em;
margin: 0 auto
}

The second command, margin: 0 auto, basically gives our containing element an automatic margin on the left and right, thereby positioning the containing element in the centre of the browser window.

IE however, will need slightly different commands to make this work:

body {
text-align: center
}
#cim_page-wrapper {
width: 66em;
margin: 0 auto;
text-align: left
}

This will then centrally align the container in IE too. To prevent the text from centrally aligning too, we insert text-align: left into the container div.

Disabling Validation for ASP.NET Server Controls

When using validation controls in your ASP.NET pages you might want to disable validation in certain situations. The most common example is when you want to disable validation for a Cancel button. You can instruct the ASP.NET server control to disable just the client-side validation, or both the client-side and the server-side validation.

Disabling Client-Side Validation

If you want to perform only server-side validation and to avoid validation on the client, you can specify for certain ASP.NET Server controls not to not run client-side script validation. To disable client-side validation, set the validation control’s EnableClientScript property to false.

<asp:Button id=”CancelButton” runat=”server” Text=”Cancel” EnableClientScript=”False” />

Disabling both Client-Side and Server-Side Validation

You can specify that individual controls on a Web Forms page cause a postback without triggering a validation check.

If you want to bypass validation for a specific ASP.NET Server control, you’ll have to set the control’s CausesValidation property to false. Consider the ASP.NET code example below, showing how to disable validation for a Cancel button:

<asp:Button id=”CancelButton” runat=”server” Text=”Cancel” CausesValidation=”False” />

There is another way to disable a validation control, and you can accomplish it by setting the Enabled ASP.NET validation control property to false. Note that if you set Enabled to false, the ASP.NET validation control will not be rendered to the ASP.NET page at all:

<asp:RequiredFieldValidator id=”RequiredFieldValidator1″ runat=”server” ControlToValidate=”YourControlToValidate” ErrorMessage=”Your error message here” Enabled=”False” />