/// <summary>
/// Parses a query string from a URL to a QueryParamCollection dictionary.
/// </summary>
/// <param name="queryString">The query string to parse.</param>
/// <returns></returns>
public static QueryParamCollection Parse(string queryString)
{
var result = new QueryParamCollection();
if (string.IsNullOrEmpty(queryString))
{
return(result);
}
queryString = queryString.TrimStart('?').Split('?').Last();
var pairs = (
from kv in queryString.Split('&')
let pair = kv.Split('=')
let key = pair[0]
let value = pair.Length >= 2 ? UrlBuilder.DecodeQueryParamValue(pair[1]) : ""
group value by key into g
select new { g.Key, Values = g.ToArray() });
foreach (var g in pairs)
{
if (g.Values.Length == 1)
{
result.Add(g.Key, g.Values[0]);
}
else
{
result.Add(g.Key, g.Values);
}
}
return(result);
}