private IEnumerable <string> GetPairs(bool encodeSpaceAsPlus)
{
foreach (var key in orderedKeys)
{
var val = this[key];
if (val == null)
{
continue;
}
if (val is string || !(val is IEnumerable))
{
yield return(key + "=" + UrlBuilder.EncodeQueryParamValue(val, encodeSpaceAsPlus));
}
else
{
// if value is IEnumerable (other than string), break it into multiple
// values with same param name, i.e. x=1&x2&x=3
// https://github.com/tmenier/Flurl/issues/15
foreach (var subval in val as IEnumerable)
{
if (subval == null)
{
continue;
}
yield return(key + "=" + UrlBuilder.EncodeQueryParamValue(subval, encodeSpaceAsPlus));
}
}
}
}
