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Editorial Team
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Asked: 2026-06-15T10:50:51+00:00

My string array contains below values null String 1 String 2 String 3 null

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My string array contains below values 

null
String 1 
String 2
String 3
null
String 4
String 5
String 6
null
String 7
String 8
String 9

I want to  retrieve 

String 1 String 2 String 3
String 4 String 5 String 6
String 7 String 8 String 9
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1 Answer

  1. Editorial Team

    A little LINQ magic

    var arr = new [] {null,"string1","string2","string3",null,"string4","string5","string6",null,"string7","string8","string9"};

var items = arr.Select( (item,index) => new {item, nextNull = Array.IndexOf(arr,null,index)} )
                           .GroupBy(x => x.nextNull)
                           .Where(x => x.Any(y => !String.IsNullOrEmpty(y.item)))
                           .Select(x => String.Join(" ",x.Select(y => y.item)));

    Output:

    string1 string2 string3
string4 string5 string6
string7 string8 string9

    Live example: http://rextester.com/GOIT12899

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