Is there a function in C# to quickly convert some collection to string and separate values with delimiter?
For example:
List<string> names --> string names_together = "John, Anna, Monica"
2 Answers
You can use String.Join. If you have a List<string> then you can call ToArray first:
List<string> names = new List<string>() { "John", "Anna", "Monica" };
var result = String.Join(", ", names.ToArray());
In .NET 4 you don't need the ToArray anymore, since there is an overload of String.Join that takes an IEnumerable<string>.
Results:
John, Anna, Monica
You can also do this with linq if you'd like
var names = new List<string>() { "John", "Anna", "Monica" };
var joinedNames = names.Aggregate((a, b) => a + ", " + b);
Although I prefer the non-linq syntax in Quartermeister's answer and I think Aggregate might perform slower (probably more string concatenation operations).
