Solved

How to fill a string with 0 on the left in C#

Posted on 2007-04-04
7
2,347 Views
Last Modified: 2013-12-16
Hi Guys,
I have a string called FullFileName and it is returnig "F-4420079251". I need that returns
"F-04042007092501". How can I add 0 on the left when the day only has one character?

DateTime FileDate    = objFileInfo[i].LastWriteTime;
string FullFileName  = "F-" + FileDate.Month + FileDate.Day + FileDate.Year +
                                       FileDate.Hour + FileDate.Minute + FileDate.Second

Thanks,
Carolina
0
Comment
Question by:Carolinat
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 2
7 Comments
 
LVL 23

Expert Comment

by:Jens Fiederer
ID: 18851614
You can use ToString with a format option to specify the zero-fill
0
 
LVL 23

Accepted Solution

by:
Jens Fiederer earned 500 total points
ID: 18851622
For example, FileDate.Day.ToString("00") will give you from "00" to "31"
0
 
LVL 23

Expert Comment

by:Jens Fiederer
ID: 18851629
You probably want to do that on the other components (month, hour, minutes,...) as well.
0
AWS Certified Solutions Architect - Associate

This course has been developed to provide you with the requisite knowledge to not only pass the AWS CSA certification exam but also gain the hands-on experience required to become a qualified AWS Solutions architect working in a real-world environment.

 
LVL 22

Expert Comment

by:_TAD_
ID: 18851633
string FullFileName  = "F-" + FileDate.Month.ToString("00") + FileDate.Day.ToString("00") + FileDate.Year. + FileDate.Hour + FileDate.Minute + FileDate.Second
0
 
LVL 22

Expert Comment

by:_TAD_
ID: 18851635

d'oh!  too slow....
0
 
LVL 86

Expert Comment

by:Mike Tomlinson
ID: 18851929
You can do it with only ONE ToString() though:

DateTime FileDate    = objFileInfo[i].LastWriteTime;
string FullFileName  = "F-" + FileDate.ToString("MMddyyyyhhmmss");

See:
http://msdn2.microsoft.com/en-us/library/8kb3ddd4(vs.80).aspx
0
 
LVL 23

Expert Comment

by:Jens Fiederer
ID: 18852055
Good point, but you probably want to use HH rather than hh, to distinguish the AM from the PM.

The original attempt displayed hours from 0-23.
0

Featured Post

PeopleSoft Has Never Been Easier

PeopleSoft Adoption Made Smooth & Simple!

On-The-Job Training Is made Intuitive & Easy With WalkMe's On-Screen Guidance Tool.  Claim Your Free WalkMe Account Now

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.
The article shows the basic steps of integrating an HTML theme template into an ASP.NET MVC project
This tutorial covers a step-by-step guide to install VisualVM launcher in eclipse.
The viewer will learn how to use and create keystrokes in Netbeans IDE 8.0 for Windows.

623 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question