Custom Auto Generate Sequences in C#

Question

So I Have a List, but the list is in integer. Like 1, 2, 3, 4, 5,...,10,...100,..

And I want to convert that integer to string with format 00000X.

X is represent the integer. So the list will be 000001, 000002, 000010, 000100, etc.

Welcome to Stack Overflow. Which part is causing problems for you at the moment? Is it the converting a whole list in general, or the specific conversion of a number into a particular format? I would separate those two aspects from each other and just focus on one at a time if I were you. — Jon Skeet, Nov 28 '18 at 11:18
int[] input = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,13,14,15 }; string output = string.Join(",", input.Select(x => "0x" + x.ToString("x5"))); — jdweng, Nov 28 '18 at 11:24

Venkatesh Konatham · Accepted Answer · 2018-11-28T11:29:03.653

1

you can achive this by using LINQ. Please check below answer.

        List<int> numbers = new List<int> { 1, 2, 3, 4, 5, 6, 7, 10, 100, 1000,10000,99999,100000 };
        var mask = "00000";
        List<string> stringNumbers = numbers.Select(x =>
        {
            if (mask.Length > x.ToString().Length)
            {
                return mask.Substring(0, mask.Length - x.ToString().Length) + x.ToString();
            }
            else return x.ToString();
        }).ToList();

edited Nov 28 '18 at 11:29

answered Nov 28 '18 at 11:20

Venkatesh Konatham

808
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wont work for numbers above with 2 or more digits, he wants "00010" and not "0000010" – styx Nov 28 '18 at 11:22
I agree with you, I have updated my answer. – Venkatesh Konatham Nov 28 '18 at 11:29

score 1 · Answer 2 · answered Nov 28 '18 at 11:22

1

List<string> result = new List<string>();  
foreach (int yourNumber in intList) {
    result.Add("0000000".Substring(0, 7 - yourNumber.ToString().Length);
}

Sould work.

You also can do in on one line, intList.ForEach(...

answered Nov 28 '18 at 11:22

LeBigCat

1,737
1
11
16

Custom Auto Generate Sequences in C#

2 Answers2