/// <summary>
/// Add or update a set of query string parameters using the supplied
/// name value dictionary. If a value is null the param is removed.
/// </summary>
/// <param name="source">Uri to perform the operation on.</param>
/// <param name="newNameValues">New name value dictionary.</param>
/// <returns>A new Uri instance with the added or modified query string parameters.</returns>
/// <exception cref="T:System.ArgumentNullException"><paramref name="source" /> is null.</exception>
/// <exception cref="T:System.ArgumentNullException"><paramref name="newNameValues" /> is null.</exception>
public static Uri AddOrUpdateQueryParams(this Uri source, IDictionary <string, string> newNameValues)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (newNameValues == null)
{
throw new ArgumentNullException(nameof(newNameValues));
}
var nameValues = UriQueryConverter.ToNameValueCollection(source.Query);
foreach (string key in newNameValues.Keys)
{
var newValue = newNameValues[key];
if (newValue == null)
{
nameValues.Remove(key);
}
else
{
nameValues.AddOrUpdate(key, newValue);
}
}
return(source.SetQuery(nameValues));
}
/// <summary>
/// Add or update a query string parameter. If the value is null the param is removed.
/// </summary>
/// <param name="source">Uri to perform the operation on.</param>
/// <param name="name">Query string parameter name.</param>
/// <param name="value">Query string parameter value.</param>
/// <returns>A Uri with the added or modified query string parameter.</returns>
/// <exception cref="T:System.ArgumentNullException"><paramref name="source" /> is null.</exception>
/// <exception cref="T:System.ArgumentException"><paramref name="name" /> was null or empty.</exception>
public static Uri AddOrUpdateQueryParam(this Uri source, string name, string value)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (string.IsNullOrEmpty(name))
{
throw new ArgumentException("Parameter name was null or empty.", nameof(name));
}
var nameValues = UriQueryConverter.ToNameValueCollection(source.Query);
if (value == null)
{
nameValues.Remove(name);
}
else
{
nameValues.AddOrUpdate(name, value);
}
return(source.SetQuery(nameValues));
}
/// <summary>
/// Returns the Uri query string as a NameValueCollection.
/// </summary>
/// <param name="source">Uri to perform the operation on.</param>
/// <returns>NameValueCollection of query string name value pairs.</returns>
public static NameValueCollection QueryToNameValueCollection(this Uri source)
{
if (source == null)
{
return(new NameValueCollection());
}
return(UriQueryConverter.ToNameValueCollection(source.Query));
}
/// <summary>
/// Returns the Uri query string as a Dictionary.
/// </summary>
/// <param name="source">Uri to perform the operation on.</param>
/// <returns>Dictionary of query string name value pairs.</returns>
public static IDictionary <string, string> QueryToDictionary(this Uri source)
{
if (source == null)
{
return(new Dictionary <string, string>());
}
return(UriQueryConverter.ToDictionary(source.Query));
}
/// <summary>
/// Remove query string parameter.
/// </summary>
/// <param name="source">Uri to perform the operation on.</param>
/// <param name="name">The name of the parameter to remove.</param>
/// <returns>Uri with any matching parameters removed.</returns>
public static Uri RemoveQueryParam(this Uri source, string name)
{
if (source == null)
{
return(null);
}
if (string.IsNullOrEmpty(name))
{
return(source);
}
var nameValues = UriQueryConverter.ToNameValueCollection(source.Query);
nameValues.Remove(name);
return(source.SetQuery(nameValues));
}
/// <summary>
/// Remove query string parameters.
/// </summary>
/// <param name="source">Uri to perform the operation on.</param>
/// <param name="names">The names of the parameters to remove.</param>
/// <returns>Uri with any matching parameters removed.</returns>
public static Uri RemoveQueryParams(this Uri source, IEnumerable <string> names)
{
if (source == null)
{
return(null);
}
if (names == null)
{
return(source);
}
var nameValues = UriQueryConverter.ToNameValueCollection(source.Query);
foreach (var name in names)
{
nameValues.Remove(name);
}
return(source.SetQuery(nameValues));
}
/// <summary>
/// Returns a new Uri with the query set.
/// </summary>
/// <param name="source">Uri to perform the operation on.</param>
/// <param name="queryNames">Query names to set.</param>
/// <returns>New Uri instance with the query set.</returns>
/// <exception cref="T:System.ArgumentNullException"><paramref name="source" /> is null.</exception>
public static Uri SetQuery(this Uri source, IEnumerable <string> queryNames)
{
var queryString = UriQueryConverter.ToString(queryNames);
return(SetQuery(source, queryString));
}
/// <summary>
/// Returns a new Uri with the query set.
/// </summary>
/// <param name="source">Uri to perform the operation on.</param>
/// <param name="queryNameValues">Query name values to set.</param>
/// <returns>New Uri instance with the query set.</returns>
/// <exception cref="T:System.ArgumentNullException"><paramref name="source" /> is null.</exception>
public static Uri SetQuery(this Uri source, NameValueCollection queryNameValues)
{
var queryString = UriQueryConverter.ToString(queryNameValues);
return(SetQuery(source, queryString));
}
