protected internal override void Unmerge(ConfigurationElement sourceElement, ConfigurationElement parentElement, ConfigurationSaveMode saveMode)
{
ConfigurationElementCollection source = (ConfigurationElementCollection)sourceElement;
ConfigurationElementCollection parent = (ConfigurationElementCollection)parentElement;
for (int n = 0; n < source.Count; n++)
{
ConfigurationElement sitem = source.BaseGet(n);
object key = source.GetElementKey(sitem);
ConfigurationElement pitem = parent != null?parent.BaseGet(key) as ConfigurationElement : null;
ConfigurationElement nitem = CreateNewElementInternal(null);
if (pitem != null && saveMode != ConfigurationSaveMode.Full)
{
nitem.Unmerge(sitem, pitem, saveMode);
if (nitem.HasValues(pitem, saveMode))
{
BaseAdd(nitem);
}
}
else
{
nitem.Unmerge(sitem, null, ConfigurationSaveMode.Full);
BaseAdd(nitem);
}
}
if (saveMode == ConfigurationSaveMode.Full)
{
EmitClear = true;
}
else if (parent != null)
{
for (int n = 0; n < parent.Count; n++)
{
ConfigurationElement pitem = parent.BaseGet(n);
object key = parent.GetElementKey(pitem);
if (source.IndexOfKey(key) == -1)
{
if (removed == null)
{
removed = new ArrayList();
}
removed.Add(pitem);
}
}
}
}
