Convert Dictionary string string to semicolon separated string in c

Question

Simple one to start the day  given a Dictionary lt string  string gt  as follows   var myDict   new Dictionary lt string  string gt     myDict  A      1   myDict  B      2   myDict  C      3   myDict  D      4     I wish to create a string   A 1 B 2 C 3 D 4   An example implementation   var myStringBuilder   new StringBuilder    bool first   true  foreach  KeyValuePair lt string  string gt  pair in myDict        if  first                first   false            else               myStringBuilder Append                  myStringBuilder AppendFormat   0   1    pair Key  pair Value      var myDesiredOutput   myStringBuilder ToString      Note the dictionary is likely to have less than 10 items which suggests that a StringBuilder is overkill   What alternative implementations are more succinct   efficient  Does the framework have any features that will help

User · Answer

Another option is to use the Aggregate extension rather than Join   String s   myDict Select x   gt  x Key         x Value  Aggregate  s1  s2    gt  s1         s2

User · Answer

For Linq to work over Dictionary you need at least  Net v3 5 and using System Linq    Some alternatives   string myDesiredOutput   string Join      myDict Select x   gt  string Join      x Key  x Value       or  string myDesiredOutput   string Join      myDict Select x   gt     x Key   x Value        If you can t use Linq for some reason  use Stringbuilder   StringBuilder sb   new StringBuilder    var isFirst   true  foreach var x in myDict       if  isFirst           sb Append    x Key   x Value         isFirst   false        else     sb Append     x Key   x Value         string myDesiredOutput   sb ToString       myDesiredOutput   A 1 B 2 C 3 D 4

User · Answer

var joinedString  string Join      myDict Select x   gt  x Key         x Value      reference   https   docs microsoft com en-us dotnet api system string join view netframework-4 8 System String Join  1 System String System Collections Generic IEnumerable   0

User · Answer

using System Linq   string s   string Join      myDict Select x   gt  x Key         x Value  ToArray        And if you re using  NET 4  or newer  then you can omit the final ToArray call

[c#] Convert Dictionary<string,string> to semicolon separated string in c#

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