public static string ToQueryString(this NameValueCollection collection) { return collection.AsKeyValuePairs().ToConcatenatedString(pair => pair.Key == null ? pair.Value : String.Format("{0}={1}", pair.Key, pair.Value), "&"); }
public static string ToQueryString(this NameValueCollection collection) { return collection.AsKeyValuePairs().ToConcatenatedString(pair => pair.Key == null ? pair.Value : $"{pair.Key}={pair.Value}", "&"); }