/// <summary>
/// The AdditionalData of a node is always populated with the query string data, this method performs this
/// operation and ensures that special values are not inserted or that duplicate keys are not added.
/// </summary>
/// <param name="node"></param>
/// <param name="queryStrings"></param>
protected void AddQueryStringsToAdditionalData(TreeNode node, FormCollection queryStrings)
{
foreach (var q in queryStrings.Where(x => node.AdditionalData.ContainsKey(x.Key) == false))
{
node.AdditionalData.Add(q.Key, q.Value);
}
}
/// <summary>
/// Converts a dictionary object to a query string representation such as:
/// firstname=shannon&lastname=deminick
/// </summary>
/// <param name="items"></param>
/// <param name="keysToIgnore">Any keys found in this collection will be removed from the output</param>
/// <returns></returns>
public static string ToQueryString(this FormCollection items, params string[] keysToIgnore)
{
if (items == null)
{
return("");
}
if (items.Any() == false)
{
return("");
}
var builder = new StringBuilder();
foreach (var(key, value) in items.Where(i => keysToIgnore.InvariantContains(i.Key) == false))
{
builder.Append($"{key}={value}&");
}
return(builder.ToString().TrimEnd(Constants.CharArrays.Ampersand));
}
