Convert an array of integers for use in a SQL “IN” clause

Question

Surely there is a framework method that given an array of integers, strings etc converts them into a list that can be used in a SQL \"IN\" clause?

e.g.

Answer 1

/// <summary>
/// Converts an array of integers into a string that may be used in a SQL IN expression.
/// </summary>
/// <param name="values">The array to convert.</param>
/// <returns>A string representing the array as a parenthetical comma-delemited list. If the array
/// is empty or missing, then "(null)" is returned.</returns>
public static string ToSqlInList(int[] values)
{
    if (values == null || values.Length == 0)
        return "(null)";  // In SQL the expression "IN (NULL)" is always false.

    return string.Concat("(", string.Join(",", Array.ConvertAll<int, string>(values,x=>x.ToString())), ")");
}

Answer 2

This could be done in one line too

public string ToInStatement(this int[] values) {
    string[] stringValues = 
       Array.ConvertAll<int, string>(values, Convert.ToString);
    string result = "(" + String.Join(",", stringValues) + ")";
    return result;
 }