public static bool TryParse(string value, QueryStringBuilder builder)
{
if (builder == null)
builder = new QueryStringBuilder();
if (value == null)
return false;
if (value == string.Empty)
return true;
string query = null;
if (value.StartsWith("?") || value.StartsWith("&"))
query = value.Substring(1);
else
query = value.Contains("?") ? value.Substring(value.IndexOf("?") + 1) : value;
if (string.IsNullOrEmpty(query))
return true;
foreach (string keyValuePair in query.Split('&'))
{
if (string.IsNullOrEmpty(keyValuePair)) continue;
string[] split = keyValuePair.Split('=');
builder.Add(HttpUtility.UrlDecode(split[0]), split.Length == 2 ? HttpUtility.UrlDecode(split[1]) : "");
}
if (!string.IsNullOrEmpty(query) && builder.Count == 0)
return false;
return true;
}
public Uri AppendTo(Uri uri)
{
if (!uri.IsAbsoluteUri)
return new Uri(AppendTo(uri.ToString()), UriKind.RelativeOrAbsolute);
string query = null;
if (!string.IsNullOrEmpty(uri.Query))
query = new QueryStringBuilder(uri.Query).Append(this).ToString();
else
query = ToString();
return new Uri(uri.GetLeftPart(UriPartial.Path)
+ (string.IsNullOrEmpty(query) ? "" : "?" + query));
}
public string AppendTo(string url)
{
QueryStringBuilder query = new QueryStringBuilder(url).Append(this);
string path = url;
if (!string.IsNullOrEmpty(url))
{
if (url.Contains("?"))
path = url.Substring(0, url.IndexOf("?"));
if (!string.IsNullOrEmpty(path))
return path + (query.Count == 0 ? "" : "?" + query.ToString());
}
return query.ToString();
}
public QueryStringBuilder Append(QueryStringBuilder builder)
{
for (var i = 0; i < builder.Keys.Count; i++)
{
string key = builder.Keys[i];
if (!string.IsNullOrEmpty(key))
{
Add(key, builder[key]);
}
}
return builder;
}
