/// <summary>
/// outputs the querystring object to a string
/// </summary>
/// <returns>the encoded querystring as it would appear in a browser</returns>
public override string ToString()
{
var builder = new StringBuilder();
for (var i = 0; i < base.Keys.Count; i++)
{
if (!string.IsNullOrEmpty(base.Keys[i]))
{
foreach (string val in base[base.Keys[i]].Split(','))
{
builder.Append((builder.Length == 0) ? "?" : "&").Append(HttpUtility.UrlEncodeUnicode(base.Keys[i])).Append("=").Append(val);
}
}
}
return(builder.ToString());
}
/// <summary>
/// adds a name value pair to the collection
/// </summary>
/// <param name="name">the name</param>
/// <param name="value">the value associated to the name</param>
/// <param name="isUnique">true if the name is unique within the querystring. This allows us to override existing values</param>
/// <returns>the QueryString object </returns>
public QueryString Add(string name, string value, bool isUnique)
{
string existingValue = base[name];
if (string.IsNullOrEmpty(existingValue))
{
base.Add(name, HttpUtility.UrlEncodeUnicode(value));
}
else if (isUnique)
{
base[name] = HttpUtility.UrlEncodeUnicode(value);
}
else
{
base[name] += "," + HttpUtility.UrlEncodeUnicode(value);
}
return(this);
}