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String concatenation using LINQ to create a CSV/PSV string

, 26 Jun 2011
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A tip to concatenate a set of strings using comma/pipe

Consider you have a set of string names: Chin, Rahul, and John. And you would like to build a comma separated string from the collection. We can do this using the Aggregate extension in LINQ as follows:

IEnumerable<string> sList = 
  new List<string> {"Chin", "Rahul", "John"};
var commaSeparated = sList.Aggregate((x, y) => x + "," + y);
var pipeSeparated = sList.Aggregate((x, y) => x + "|" + y);

Here is the expected output:



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Comments and Discussions

GeneralI think this will be slower compared to the string.Join meth... PinmemberRakeshMeena26-Jun-11 19:18 
GeneralWhat is the performance difference between that and Join(sLi... Pinmemberdgauerke26-Jun-11 10:04 
GeneralWill it not be slow enough to go this way?! PinmemberRavi Sant26-Jun-11 8:37 
GeneralYou need to think about escaping as well as (pointed out alr... PinmemberHenry.Ayoola23-Jun-11 21:34 
GeneralThink there are syntax errors in the code. list.Aggregate sh... PinmemberGeorge Swan23-Jun-11 20:16 
GeneralRe: a type mistake. thanks for pointing out. PinmemberJP_Rocks26-Jun-11 8:35 
GeneralWould work OK for short lists. Would probably go with a Stri... PinprotectorAspDotNetDev23-Jun-11 5:16 

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