View source for Converting Int Array to String

[[Category:CSharp]]
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== Convert an array of integers to a comma-separated string ==
if we have 
 int[] arr = new int[5] {1,2,3,4,5};
and we want this
 string => "1,2,3,4,5"


=== .NET 4 ===
 string.Join(",", arr)
=== .NET earlier ===
 string.Join(",", Array.ConvertAll(arr, x => x.ToString()))

=== or it can be done by using extension methods like this === 
<pre class="brush:c-sharp">
 public static string ToDelimitedString<T>(this IEnumerable<T> lst, string separator = ", ")
 {
     return lst.ToDelimitedString(p => p, separator);
 }
</pre>


<pre class="brush:c-sharp">
 public static string ToDelimitedString<S, T>(this IEnumerable<S> lst, Func<S, T> selector, string separator = ", ")
 {
     return string.Join(separator, lst.Select(selector));
 }
</pre>
So now just:
 new int[] { 1, 2, 3, 4, 5 }.ToDelimitedString();