Question

It is a pattern that occurs quite often in one part of our Framework.
Given an Array of Strings, we have to concat all of them, seperated by Semicolons.

I´d like to know in which elegant way it can be done.
I`ve seen some variations across our codebase, and always, when i have to do this, i have to rethink again.

My current pattern is this:

String[] values = new String[] {"a","b","c","d"};
String concat = String.Empty;
foreach(String s in values)
{
   if(String.IsEmptyOrNullString(s) == false)
       concat + = ", ";
   concat += s;
}

What negs me is the if statement, i could insert the first item before the loop and start with a for loop, starting at index 1, but this doesn´t increase the readability.

What are your suggestions?

Answer 1

You can use string.Join():

String[] values = new String[] {"a","b","c","d"};
var concat = string.Join(", ", values);

This will result in something looking like this:

a, b, c, d