Question

I need to take a list and Linq it such that I come out with something suitable for a sql “in”. This is what I am using now. Is there a cleaner Linq way to get this "(333,333,54445,56667)"

List<int> vendorIds;
string snipet = "";
for (int i = 0; i < vendorIds.Count; i++)
{
    snipet += (i > 0) ? "," + vendorIds[i].ToString() : vendorIds[i].ToString();
}

Just wondering.

Answer 1

In .NET <= 3.5

string.Join(",", vendorIds.Select(x => x.ToString()).ToArray())

In .NET >= 4

string.Join(",", vendorIds)

I prefer to write myself a method for that like:

string Concat(this IEnumerable<string> items) { ... }