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String concatenation using LINQ to create a CSV/PSV string

, 26 Jun 2011 CPOL
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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:

Chin,Rahul,John
Chin|Rahul|John

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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Comments and Discussions

 
GeneralI think this will be slower compared to the string.Join meth... Pin
RakeshMeena, 26-Jun-11 20:18
memberRakeshMeena26-Jun-11 20:18 
GeneralWhat is the performance difference between that and Join(sLi... Pin
dgauerke, 26-Jun-11 11:04
memberdgauerke26-Jun-11 11:04 
GeneralWill it not be slow enough to go this way?! Pin
Ravi Sant, 26-Jun-11 9:37
memberRavi Sant26-Jun-11 9:37 
GeneralYou need to think about escaping as well as (pointed out alr... Pin
Henry.Ayoola, 23-Jun-11 22:34
memberHenry.Ayoola23-Jun-11 22:34 
GeneralThink there are syntax errors in the code. list.Aggregate sh... Pin
George Swan, 23-Jun-11 21:16
memberGeorge Swan23-Jun-11 21:16 
GeneralRe: a type mistake. thanks for pointing out. Pin
JP_Rocks, 26-Jun-11 9:35
memberJP_Rocks26-Jun-11 9:35 
GeneralWould work OK for short lists. Would probably go with a Stri... Pin
AspDotNetDev, 23-Jun-11 6:16
protectorAspDotNetDev23-Jun-11 6:16 

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