Counter with 5 digits

Question

I want counter with 5 digits, for exaple: 00000, 00001, 00002.... I creating files with this command:

FileStream Fl = File.Create(@"C:\\U\\L\\Desktop\\" + "i" + (counter) + ".xml");

Definition of counter:

int counter;

My increment: counter++;

Have you any idea, how i could make 5 digits counter? Thanks for all ideas:)

Have a look at this http://stackoverflow.com/questions/4325267/c-sharp-convert-int-to-string-with-padding-zeros — Lianne Crocker, Aug 29 '13 at 07:54

score 15 · Answer 1 · answered Aug 29 '13 at 07:52

15

About custom numeric format strings

int value = 123;
Console.WriteLine(value.ToString("00000"));
// Displays 00123

answered Aug 29 '13 at 07:52

Guru Stron

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score 4 · Accepted Answer · answered Aug 29 '13 at 07:52

4

Do you mean something like this:

  counter.ToString().PadLeft(5, '0')

answered Aug 29 '13 at 07:52

Dmitry Bychenko

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In general you should not use `PadLeft()` because it doesn't work with negative numbers. It's fine for the OP's requirement and it seems very unlikely you'd ever need to pad negative numbers with leading zeroes, but worth pointing this out methinks. – Matthew Watson Aug 29 '13 at 08:17

Jeppe Stig Nielsen · Answer 3 · 2016-06-13T15:22:06.900

4

You can use a standard formatting string:

... + counter.ToString("D5") + ...

Or with Format method:

string.Format("... {0:D5} ...", counter)

With the string interpolation of C# 6.0 (Visual Studio 2015) and later, that will be:

$"... {counter:D5} ..."

edited Jun 13 '16 at 15:22

answered Aug 29 '13 at 07:56

Jeppe Stig Nielsen

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score 2 · Answer 4 · answered Aug 29 '13 at 07:52

2

You just need to use the appropriate format specification when converting the counter to a string.

Try this:

string counterString = counter.ToString("00000");

Or (equivalent):

string counterString = counter.ToString("d5");

answered Aug 29 '13 at 07:52

Matthew Watson

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Tim Schmelter · Answer 5 · 2013-08-29T08:02:22.517

1

You can use PadLeft with String.Format. Note that you should use Path.Combine if you build paths.

int counter = 0;
for (int i = 0; i < 1000; i++)
{
    string counterText = (counter++).ToString().PadLeft(5, '0');
    string fileName = string.Format("i{0}.xml", counterText);
    string fullName = Path.Combine(@"C:\U\L\Desktop\", fileName);
    FileStream Fl = File.Create(fullName);
    // ...
}

edited Aug 29 '13 at 08:02

answered Aug 29 '13 at 07:57

Tim Schmelter

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Although I agree that using `Path.Combine` is the way to go, this doesn't actually answer the question... – Nolonar Aug 29 '13 at 07:58
2

I think you need `{0:D5}` though. – Jeppe Stig Nielsen Aug 29 '13 at 07:59
@JeppeStigNielsen + Nolonar: Thanks. Edited my answer to use `PadLeft` instead. – Tim Schmelter Aug 29 '13 at 08:01
@JeppeStigNielsen: There are several ways to do it. I prefer `PadLeft` if i can since it's more explicit. – Tim Schmelter Aug 29 '13 at 08:05
Although `string.PadLeft()` works for this particular example, it fails spectacularly for negative numbers. Just sayin' ;) – Matthew Watson Aug 29 '13 at 08:15

score 0 · Answer 6 · answered Aug 29 '13 at 07:55

0

this should do it

int counter = 5;
string asString = counter.ToString("D5");

or

asString = string.Format("{0:00000}", counter);

output will be 00005

answered Aug 29 '13 at 07:55

Ehsan

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score 0 · Answer 7 · answered Aug 29 '13 at 08:00

0

You can use the ToString function:

counter.ToString("00000");

answered Aug 29 '13 at 08:00

fhr

1

Counter with 5 digits

7 Answers7