|
In the following String.Format call it will format a number to 6 zero-padded digits, prepend the plus or minus sign and then pad with a space on the left to 8 characters:
String.Format({0,8:+000000;-000000}, num); // result is of the form " +002009"
What format string can I use to format a number to 7 space-padded digits and prepend the plus or minus sign before the spaces? I am looking for something like
"+ 2009"
Beth
|
|
|
|
|
bscaer wrote: What format string can I use
I don't know but they have probably hidden that information in the documentation[^]
We keep complaining about that but they just keep doing it. Oh well.
|
|
|
|
|
Thanks for the link. I have spent quite a bit of time reading the documentation but it seems to be incomplete, at best.
|
|
|
|
|
bscaer wrote: Thanks for the link.
That was a bad link, sorry.
Standard number formats[^]
Custome format strings[^]
bscaer wrote: but it seems to be incomplete
Not the documentation. Sometimes all the information you need is not on a single page but there are links to the additional pages.
Perhaps the formatting support does not provide for your specific goal. If that is the case then you will have to provide your own implementation.
|
|
|
|
|
I don't think she would have gotten as far as she did without having read the documentation; I know I wouldn't have.
|
|
|
|
|
Will this suit the need? 
System.Console.WriteLine ( "{0,1: + ; - }{0,7 : 0 ; 0 }" , 2009 ) ;
System.Console.WriteLine ( "{0,1: + ; - }{0,7 : 0 ; 0 }" , -2009 ) ;
(SPACEs added to avoid smileys; remove them.) (Third try.)
modified on Friday, February 27, 2009 1:55 PM
|
|
|
|
|
Yes, that is brilliant! Thank you 
|
|
|
|
|
Glad to be of service.
I was also just looking for a solution using my ApplyFormat[^] method, but no joy.
I had hoped that this would do it:
System.Console.WriteLine ( 2009.ApplyFormat ( "' '+;-''#####0;#####0" ) ) ;
System.Console.WriteLine ( (-2009).ApplyFormat ( "' '+;-''#####0;#####0" ) ) ;
Apparently the number sign (#) format character doesn't perform padding. 
(Apparently its only purpose is to result in an empty string when the value is zero. Yeah, like that's useful.  )
I guess that means I can add more functionality to my method to support it. Yippee, something to do.
|
|
|
|
|
From my experimentation it seems like the number sign (#) is only useful when specifying the location of a special character, like a comma, such as in String.Format("0:###,###,###").
|
|
|
|
|
Ah, that too. Darn, there needs to be another option, like '9' to specify left-padding.
I've forgotten everything I learned about COBOL, so I forget how this was handled in it.
|
|
|
|
|
PIEBALDconsult wrote: I've forgotten everything I learned about COBOL, so I forget how this was handled in it.
You can fix that easily by following some links at the bottom[^].
Luc Pattyn [Forum Guidelines] [My Articles]
- before you ask a question here, search CodeProject, then Google
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get
- use the code block button (PRE tags) to preserve formatting when showing multi-line code snippets
|
|
|
|
|
I already did some searching; I now know almost as much about COBOL as I used to. 
|
|
|
|
|
IIRC it also lets you pad to the right of a decimal. Unfortunately I don't know how to pad to the left.
Today's lesson is brought to you by the word "niggardly". Remember kids, don't attribute to racism what can be explained by Scandinavian language roots.
-- Robert Royall
|
|
|
|
|
I appears that the formats themselves don't pad (other than with zeroes), that padding is handled by the WriteLine, string.Format, etc. that calls it.
I assume that the creators of the formatters decided that if the caller was going to do the padding, then they didn't need to. Which makes sense, but there are cases when the caller isn't going to do the padding so the formatter should be able to.
Because my ApplyFormat method is a caller of formatting, I now have to decide how best to allow the user to specify padding.
I'm thinking I should follow Microsoft's lead and allow the format to be prefixed with "n:" to specify a minimum width of n characters.
|
|
|
|
|
similes avoided spaces. 
Today's lesson is brought to you by the word "niggardly". Remember kids, don't attribute to racism what can be explained by Scandinavian language roots.
-- Robert Royall
|
|
|
|
|
Alas. 
|
|
|
|
|
PIEBALDconsult wrote: SPACEs added to avoid smileys; remove them.
Whenever 4 or more spaces are present use t a b s
Luc Pattyn [Forum Guidelines] [My Articles]
- before you ask a question here, search CodeProject, then Google
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get
- use the code block button (PRE tags) to preserve formatting when showing multi-line code snippets
modified on Sunday, June 12, 2011 8:46 AM
|
|
|
|
|
I didn't want any SPACEs in the format at all.
|
|
|
|
|
The original code was mangled because of fixes required for smileys. Here is the correct code:
System.Console.WriteLine ( "{0 , 1 : + ; -}{0 , 7 : -O ; 0}" , 2009 ) ;
System.Console.WriteLine ( "{0 , 1 : + ; -}{0 , 7 : -O ; 0}" , -2009 ) ;
|
|
|
|
|
What I posted works fine for me (once the SPACEs are removed).
|
|
|
|
|
The best thing to do in this scenario is to create your own customer formatter and then pass it in as an argument.
String.Format(formatProvider, formatString, arguments). I have found this to be the only good way when dealing with phone numbers which may have bad data and I am sure it will provide you with that you need.
http://msdn.microsoft.com/en-us/library/system.iformatprovider.aspx[^]
|
|
|
|
|
It just might come to that.
|
|
|
|
|
I have added padding support to my ApplyFormat method, so now 2009.ApplyFormat ( "' '+;-''6 : 0 ;0" ) will do that.
But now I want to cache the interpretation of the format specifier to streamline things a bit, so I'm not yet ready to update the article.
modified on Saturday, February 28, 2009 6:26 PM
|
|
|
|
|
Hi - can some one help me out here please - I'm new-ish to C#.
What are the performance implications of creating all my objects (forms, classes etc) inside one assembly versus splitting up the application over multiple assemblies?
I would prefer to keep every thing in one as I find it easier to work with and I won't get the cyclic error where by a form in one refers to a form in another which refers back to the original etc.
If I do put eveything in one assembly, will the application take longer to start up?
Will opening forms be quicker using the one as the app won't need to open more than one assembly to find the correct opened form etc?
Thanks
|
|
|
|
|
MarkB123 wrote: can some one help me out here please
Sure why not, click here[^]
I always enjoy helping the Google impaired.
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
