How to remove empty string from array

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i have an array i want to convert that array value to string ,when i am not inserting anything value its taking 1st value then comma then comma
i want to delete that comma

SkillId[0]=1
SkillId[2]=2
SkillId[3]=""
var MainSkill = string.Join(",", SkillId);
Tst.Skill = MainSkill;

here its coming "1,2,,"
how to delete the last cooma or add 0 there

Posted 25-Jan-16 0:40am

Member 11970398

Updated 25-Jan-16 1:28am

koolprasad2003

v2

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Comments

dan!sh 25-Jan-16 6:57am

You might have noticed a "code" button on the top while asking at least one of your 45 questions. Why don't you use it?

Sergey Alexandrovich Kryukov 25-Jan-16 10:00am

It is impossible to remove any elements from an array, but you don't need it.
—SA

2 solutions

Solution 2

Just use LINQ and get it resolve

C#

//first remove empty string
test =  test.Where(x => !string.IsNullOrEmpty(SkillId)).ToArray();
//now concatenate it
var MainSkill = string.Join(",", test);

Posted 25-Jan-16 1:27am

koolprasad2003

Comments

Leo Chapiro 25-Jan-16 9:56am

+5

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F-ES Sitecore · Accepted Answer · 2016-01-25T00:50:00

Solution 1

C#

var MainSkill = string.Join(",", SkillId.Where(x => x != null && !string.IsNullOrWhiteSpace(x.ToString())));

Posted 25-Jan-16 0:50am

F-ES Sitecore

Comments

Member 11970398 25-Jan-16 7:03am

Thanx

Sergey Alexandrovich Kryukov 25-Jan-16 9:52am

Note that it does not actually remove any elements, that would be impossible; also, such solutions are questionable in terms of performance. Please see Solution 3.
Yes, I do understand that it solves the problem, in practice; still, it's better not to confuse the inquirer and explain what it is.
—SA

F-ES Sitecore 25-Jan-16 9:55am

He doesn't want to remove the items from the array, he wants them omitted from the string he turns the array into.

Leo Chapiro 25-Jan-16 9:55am

+5

Sergey Alexandrovich Kryukov 25-Jan-16 9:58am

I see now, thank you for the explanation.
—SA