Conversion from Int array to string array

Question

When I am converting array of integers to array of string, I am doing it in a lengthier way using a for loop, like mentioned in sample code below. Is there a shorthand for this?

The existing question and answers in SO are about int[] to string (not string[]). So they weren't helpful.

While I found this Converting an int array to a String array answer but the platform is Java not C#. Same method can't be implemented!

int[] intarray =  { 198, 200, 354, 14, 540 };
Array.Sort(intarray);
string[] stringarray = { string.Empty, string.Empty, string.Empty, string.Empty, string.Empty};

for (int i = 0; i < intarray.Length; i++)
{
    stringarray[i] = intarray[i].ToString();
}

score 85 · Accepted Answer · answered Dec 27 '12 at 07:52

85

int[] intarray = { 1, 2, 3, 4, 5 };
string[] result = intarray.Select(x=>x.ToString()).ToArray();

answered Dec 27 '12 at 07:52

Tilak

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Works! Let me try to understand the code. The looping is being done here isn't it? but not explicitly! Each number in intarray is converted to string (x=>x.ToString()). Am I correct here? – Rookie Programmer Aravind Dec 27 '12 at 07:55
1

You are absolutely right. Looping is done by [Select](http://msdn.microsoft.com/en-us/library/system.linq.enumerable.select.aspx) method. – Tilak Dec 27 '12 at 07:57
Please edit the question only if it is really necessary and try to make all possible editions at once. exceeding certain number of editions may turn post into wiki! Thanks. – Rookie Programmer Aravind Jan 16 '13 at 10:08

score 14 · Answer 2 · answered Oct 30 '14 at 08:58

14

Try Array.ConvertAll

int[] myInts = { 1, 2, 3, 4, 5 };

string[] result = Array.ConvertAll(myInts, x=>x.ToString());

answered Oct 30 '14 at 08:58

Rolwin Crasta

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Way to do it without "using System.Data.Linq;" which was requested but is a bigger hammer than is really needed. – Task Nov 07 '14 at 20:57

Vishal Suthar · Answer 3 · 2012-12-27T08:00:57.717

5

Here you go:

Linq version:

String.Join(",", new List<int>(array).ConvertAll(i => i.ToString()).ToArray());

Simple one:

string[] stringArray = intArray.Select(i => i.ToString()).ToArray();

edited Dec 27 '12 at 08:00

answered Dec 27 '12 at 07:55

Vishal Suthar

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String.Join is not required. – Tilak Dec 27 '12 at 08:01
Select is Linq method, defined in Enumerable class. ConvertAll is defined in Array class (that exists even before linq). – Tilak Dec 27 '12 at 08:02
that means no need to declare `using System.Linq;` if we are using CovertAll! thank you so much! – Rookie Programmer Aravind Dec 27 '12 at 08:04
1

That means you can use this in `.Net 2.0` also..@InfantProgrammer'Aravind' – Vishal Suthar Dec 27 '12 at 08:05
That's great! but well Just FYI, http://stackoverflow.com/questions/2138/linq-on-the-net-2-0-runtime – Rookie Programmer Aravind Dec 27 '12 at 08:07
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That is because .net3/3.5 are just additional libraries on .NET 2.0 core. – Tilak Dec 27 '12 at 08:08
@Vishal, yes it is! and not preferable to implement in realtime! so I appreciate your answer! Upvoted for providing .Net2 solution! – Rookie Programmer Aravind Dec 27 '12 at 08:53

Conversion from Int array to string array

3 Answers3