Split and join C string

Question

Possible Duplicate    First split then join a subset of a string       I m trying to split a string into an array  take first element out  use it  and then join the rest of the array into a seperate string   Example   theString    Some Very Large String Here    Would become   theArray      Some    Very    Large    String    Here      Then I want to set the first element in a variable and use it later on   Then I want to join the rest of the array into a new string   So it would become   firstElem    Some   restOfArray    Very Large String Here    I know I can use theArray 0  for the first element  but how would I concatinate the rest of the array to a new string

User · Accepted Answer

You can use string Split and string Join   string theString    Some Very Large String Here   var array   theString Split       string firstElem   array First    string restOfArray   string Join      array Skip 1      If you know you always only want to split off the first element  you can use   var array   theString Split      2     This makes it so you don t have to join   string restOfArray   array 1

User · Answer

You can split and join the string  but why not use substrings  Then you only end up with one split instead of splitting the string into 5 parts and re-joining it  The end result is the same  but the substring is probably a bit faster   string lcStart    Some Very Large String Here   int lnSpace   lcStart IndexOf        if  lnSpace  gt  -1        string lcFirst   lcStart Substring 0  lnSpace       string lcRest   lcStart Substring lnSpace   1

User · Answer

Well  here is my  answer   It uses the fact that String Split can be told hold many items it should split to  which I found lacking in the other answers    string theString    Some Very Large String Here   var array   theString Split new             2      return at most 2 parts    note  be sure to check it s not an empty array string firstElem   array 0      note  be sure to check length first string restOfArray   array 1     This is very similar to the Substring method  just by a different means

[c#] Split and join C# string

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