/// <summary>
/// Builds a query string based on a set of key,value pairs
/// </summary>
/// <param name="pars"></param>
/// <returns></returns>
public static string Join(IEnumerable <Tuple <string, string> > pars)
{
StringBuilder result = new StringBuilder();
foreach (var kv in pars)
{
result.Append(QueryParam.ToString(kv));
result.Append("&");
}
return(result.ToString().TrimEnd('&'));
}
