Easiest way to parse a comma delimited string to some kind of object I can loop through to access the individual values

Question

What is the easiest way to parse a comma delimited string list of values into some kind of object that I can loop through  so that I can access the individual values easily   example string   0  10  20  30  100  200   I m a bit new to C   so forgive me for asking a simple question like this  Thanks

User · Answer

Use Linq  it is a very quick and easy way   string mystring    0  10  20  30  100  200    var query   from val in mystring Split                  select int Parse val   foreach  int num in query         Console WriteLine num

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there are gotchas with this - but ultimately the simplest way will be to use  string s    yourlongstring   string   values   s Split         If the number of commas and entries isn t important  and you want to get rid of  empty  values then you can use  string   values   s Split     ToCharArray    StringSplitOptions RemoveEmptyEntries     One thing  though - this will keep any whitespace before and after your strings   You could use a bit of Linq magic to solve that   string   values   s Split      Select sValue   gt  sValue Trim    ToArray      That s if you re using  Net 3 5 and you have the using System Linq declaration at the top of your source file

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I think it s better to use the Microsoft VisualBasic FileIO TextFieldParser Class if you re working with comma separated values text files

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var stringToSplit    0  10  20  30  100  200               To parse your string      var elements   test Split new                System StringSplitOptions RemoveEmptyEntries              To Loop through     foreach  string items in elements                  enjoy

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Use a loop on the split values string values    quot 0 1 2 3 4 5 6 7 8 9 quot    foreach string value in values split               do something with individual value

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The pattern matches all non-digit characters  This will restrict you to non-negative integers  but for your example it will be more than sufficient   string input    0  10  20  30  100  200   Regex Split input     D

User · Answer

Sometimes the columns will have commas within themselves  such as    Some item    Another Item    Also  One more item   In these cases  splitting on     will break some columns   Maybe an easier way  but I just made my own method  as a bonus  handles spaces after commas and returns an IList    private IList lt string gt  GetColumns string columns        IList lt string gt  list   new List lt string gt          if   string IsNullOrWhiteSpace columns                 if  columns 0                                    treat as just one item             list Add columns                     else                       bool gettingItemName   true              bool justChanged   false              string itemName   string Empty               for  int index   1  index  lt  columns Length  index                                  justChanged   false                  if  subIndustries index                                                 gettingItemName    gettingItemName                      justChanged   true                                     if   gettingItemName    false   amp  amp                   justChanged    true                                         list Add itemName                       itemName   string Empty                      justChanged   false                                     if   gettingItemName    true   amp  amp   justChanged    false                                         itemName    columns index                                                        return list

[c#] Easiest way to parse a comma delimited string to some kind of object I can loop through to access the individual values?

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