private IDynamicSettingGroup GetGroup(string key, bool create)
{
if (string.IsNullOrEmpty(key))
{
throw new ArgumentException("Key must be a string with one or more characters.", "key");
}
if (key[0] == '{' || key[key.Length - 1] == '}')
{
throw new ArgumentException("Key must not start with '{' and must not end with '}'.", "key");
}
IDynamicSettingGroup group;
if (!this._groups.TryGetValue(key, out group))
{
if (create)
{
group = new DynamicSettingGroup(key, this);
this._groups[key] = group;
}
else
{
group = null;
}
}
return(group);
}
/// <summary>
/// Initialize new <see cref="Setting{T}"/> instance.
/// </summary>
/// <param name="group">Group for which this setting belongs to.</param>
/// <param name="key">Unique key used to identify this setting.</param>
/// <param name="defaultValue">Default value of setting which can be restored.</param>
/// <param name="filter">Optional delegate which can be used to filter values
/// on assignment if specified. It is important to note that default values
/// are also filtered on assignment.</param>
internal Setting(DynamicSettingGroup group, string key, T defaultValue, FilterValue <T> filter)
{
this._group = group;
this.Key = key;
this.DefaultValue = defaultValue;
this._filter = filter;
}