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();
}

Tilak · Accepted Answer · 2012-12-27 07:52:25Z

90

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

answered Dec 27, 2012 at 7:52

Tilak

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3 Comments

Rookie Programmer Aravind Over a year ago

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?

Tilak Over a year ago

You are absolutely right. Looping is done by Select method.

Rookie Programmer Aravind Over a year ago

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.

Rolwin Crasta · Accepted Answer · 2014-10-30 08:58:39Z

15

Try Array.ConvertAll

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

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

answered Oct 30, 2014 at 8:58

Rolwin Crasta

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1 Comment

Task Over a year ago

Way to do it without "using System.Data.Linq;" which was requested but is a bigger hammer than is really needed.

Vishal Suthar · Accepted Answer · 2012-12-27 08:00:57Z

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, 2012 at 8:00

answered Dec 27, 2012 at 7:55

Vishal Suthar

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7 Comments

Tilak Over a year ago

String.Join is not required.

Tilak Over a year ago

Select is Linq method, defined in Enumerable class. ConvertAll is defined in Array class (that exists even before linq).

Rookie Programmer Aravind Over a year ago

that means no need to declare using System.Linq; if we are using CovertAll! thank you so much!

Vishal Suthar Over a year ago

That means you can use this in .Net 2.0 also..@InfantProgrammer'Aravind'

Tilak Over a year ago

That is because .net3/3.5 are just additional libraries on .NET 2.0 core.

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