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Alex Rivera
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I have 20GB+ csv file like this: **CallId,MessageNo,Information,Number** 1000,1,a,2 99,2,bs,3 1000,3,g,4 66,2,a,3 20,16,3,b 1000,7,c,4 99,1,lz,4 ... I must order this file by CallId and MessageNo as asc. (One way is load database->sort->export) How can i sort this file without loading all lines to memory in c#? (like line by line using streamreader) Do you know a library for solution? i wait your advice, thanks
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