/// <summary>
/// Add a single property to the collection.
/// </summary>
/// <remarks>If the property is defined and identical in the parent, no action is taken.</remarks>
/// <param name="key">The property key.</param>
/// <param name="value">The property value.</param>
public void AddProperty(string key, string value)
{
string currentValue;
if (_properties.TryGetValue(key, out currentValue))
{
// We've already seen the property here, update value if different
if (currentValue != value)
{
_properties[key] = value;
}
}
else if (_parent != null && _parent.TryGetValue(key, out currentValue))
{
// The parent has the property, only add if different
if (currentValue != value)
{
_properties.Add(key, value);
}
}
else
{
// No one has the property, just add it.
_properties.Add(key, value);
}
}
public bool TryGetValue(string key, out string value)
{
if (_properties.TryGetValue(key, out value))
{
return(true);
}
return(_parent?.TryGetValue(key, out value) == true);
}