I have a list of objects that implement ToString(). I need to convert the whole list to one string in one line. How can I do that?
5 Answers
Another method that may help out is string.Join(), which takes a set of objects and will join them with any delimiter you want. For instance:
var combined = string.Join(", ", myObjects);will make a string that is comma/space separated.
3Assuming you mean your objects implement ToString, I believe this will do it:
String.Concat( objects.Select(o=>o.ToString()) );As per dtb note, this should work as well:
String.Concat( objects );See
Of course, if you don't implement ToString, you can also do things like:
String.Concat( objects.Select(o=>o.FirstName + " " + o.LastName) );You can use String.Join to concatenate the object list.
string str = String.Join(",", objects);None of these worked for me. I'm confused, because the docs explicitly say they won't work (require string, not object). But modifying @Adil's original answer (found by looking at the previous revisions), I got a version that works fine:
string.Join( ",", objectList.Select(c=>c.ToString()).ToArray<string>())EDIT: as per @Chris's comment - I'm using Unity's version of .NET. I used the Microsoft docs as reference, so I'm still confused why this got downvoted, but ... maybe it's a Unity-specific problem that needs this solution.
2You can use Linq Enumerable.Select to select a string object and Enumerable.Aggregate into a string.
string StringConcat = ObjectList.Select(x => { return x.StringValue; }).ToList().Aggregate((a,b) => $"{a},{b}");Example structure:
ObjectList = List<ObjectClass>();
public class ObjectClass { public string StringValue { get; set; }
}
