Build a string from a string[] without using any loops

Question

I have a string array. It is dynamic and can be of any length(0 also). How can I make a single string from the array, delimited by any separator like ; or | ??

string str = string.empty;
string[] arrOptions = strOptions.Split(new string[]{"\n"}, StringSplitOptions.RemoveEmptyEntries);

Now, have to make the string from arrOptions and put it in str

Thanks All. But I think I should select the first answer, that should be fair enough. ;) — Avishek
– Avishek, Commented Jan 17, 2013 at 9:02
@KonstantinVasilcov : I saw from my answer notifications in inbox ;) — Avishek
– Avishek, Commented Jan 17, 2013 at 9:14

horgh · Accepted Answer · 2013-01-17 08:54:28Z

5

Use string.Join:

string result = string.Join("\n", arrOptions);

Or simply concat them, if you don't need the separator anymore:

string result = string.Concat(arrOptions);

answered Jan 17, 2013 at 8:54

horgh

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4 Comments

Avishek Over a year ago

Concat cannot operate dynamic numbers of string elements

horgh Over a year ago

@Avishek what do you mean? public static string Concat(params string[] values) this overload is used in this case. What's wrong with it?

Avishek Over a year ago

Remember, I also want a separator. :/

horgh Over a year ago

@Avishek then it's definitely String.Join Method

acrilige · Accepted Answer · 2013-01-17 08:54:57Z

3

Use String.Join(separator, objects) method.

answered Jan 17, 2013 at 8:54

acrilige

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Comments

Mohammad Arshad Alam · Accepted Answer · 2013-01-17 08:54:42Z

2

You can try both way:

    string[] strArr = { "Abc", "DEF", "GHI" };

    //    int i = 0;
    //    string final=string.Empty;
    //IterationStart:
    //    if (i < strArr.Length)
    //    {
    //        final += strArr[i] + ",";
    //        i++;
    //        goto IterationStart;
    //    }
    //Console.WriteLine(final);

     string str = string.Join(",", strArr);
     Console.WriteLine(str);

answered Jan 17, 2013 at 8:54

Mohammad Arshad Alam

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1 Comment

Mohammad Arshad Alam Over a year ago

commented code is another way to achieve this. yes i am using labeling.

Øyvind Bråthen · Accepted Answer · 2013-01-17 08:54:37Z

2

str = string.Join( ';', arrOptions );

answered Jan 17, 2013 at 8:54

Øyvind Bråthen

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Comments

Prateek Singh · Accepted Answer · 2013-01-17 08:56:53Z

1

Try : string.Join(seperator, arrOptions);

answered Jan 17, 2013 at 8:56

Prateek Singh

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Comments

Praveen Prasannan · Accepted Answer · 2013-01-17 09:04:41Z

0

You might be looking for the below solution.

string str = string.empty;
string[] arrOptions = strOptions.Split(new string[]{"\n"}, StringSplitOptions.RemoveEmptyEntries);
str = string.Concat(arrOptions);

Thanks,

Praveen

answered Jan 17, 2013 at 9:04

Praveen Prasannan

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