Create comma separated strings C#?

c# string-concatenation
grady picture grady · Feb 3, 2011 · Viewed 101.5k times · Source

I have an object which holds many values, some of them (not all values from the object) need to be put in a csv string. My approach was this:

string csvString = o.number + "," + o.id + "," + o.whatever ....

Somehow I think there is a better, more elegant way?

Answer

Øyvind Bråthen picture Øyvind Bråthen · Feb 3, 2011

If you put all your values in an array, at least you can use string.Join.

string[] myValues = new string[] { ... };
string csvString = string.Join(",", myValues);

You can also use the overload of string.Join that takes params string as the second parameter like this:

string csvString = string.Join(",", value1, value2, value3, ...);

Related questions

Using LINQ to concatenate strings

What is the most efficient way to write the old-school: StringBuilder sb = new StringBuilder(); if (strings.Count > 0) { foreach (string s in strings) { sb.Append(s + ", "); } sb.Remove(sb.Length - 2, 2); } return sb.ToString(); ...in LINQ?

Read More
Getting unicode string from its code - C#

I know following is the way to use unicode in C# string unicodeString = "\u0D15"; In my situation, I will not get the character code (0D15) at compile time. I get this from a XML file at runtime. I wonder …

Read More
Memory usage of concatenating strings using interpolated vs "+" operator

I see the benefit of using interpolated strings, in terms of readability: string myString = $"Hello { person.FirstName } { person.LastName }!" over a concatenation done this way: string myString = "Hello " + person.FirstName + " " person.LastName + "!"; The author of this video tutorial claims that …

Read More