delete node in xml

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How can i delete tags with employee in c#

for(int i=rootNode.ChildNodes.Count-1;i>=0;–i)
{
if(rootNode.ChildNodes*.Name.ToLower() == “employee”)*
{
rootNode.RemoveChild(rootNode.ChildNodes*);*
}
}

This work

void deleteNode(string n){
 XmlNodeList childs = xmlDoc.GetElementsByTagName(n);
 foreach (XmlNode node in childs)
    {
		elmRoot.RemoveChild(node);		   
	}
	xmlDoc.Save(filepath);
}