String.Join on a List of Objects

In .NET 4, you could just use:

var x = string.Join("|", myList);

.NET 3.5 doesn't have as many overloads for string.Join though - you need to perform the string conversion and turn it into an array explicitly:

var x = string.Join("|", myList.Select(x => x.ToString()).ToArray());

Compare the overloads available:

Thank you, Jon Skeet. For a more complex object I use the below:

string.Join("-", item.AssessmentIndexViewPoint.Select(x =>
              x.ViewPointItem.Name).ToList())

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