LINQ Help: How Do I access a Specific Attribute using LINQ to XML

I wish to access some specific attribute (Tag name) i an XML file, and place them in a list but i cant get i right. What am I doing wrong??

The list should look like this:

Tag_1 Tag_2 Tag_3

XElement xelement = XElement.Load("C:/...../Desktop/Testxml.xml");
var tagNames = from tag in xelement.Elements("tagGroup")
                   select tag.Attribute("name").Value;

    foreach (XElement xEle in tagNames)
    {
        ....
    }`

Here is the XML file:

<configuration>
  <logGroup>
    <group name="cpm Log 1h 1y Avg" logInterval="* 1 * * * ?" />
    <group name="cpm Log 1d 2y Avg" logInterval="* 10 * * * ?" />
  </logGroup>
  <tagGroup>
    <tag name="Tag_1">
      <property name="VALUE">
        <logGroup name="cpm Log 1h 1y Avg" />
        <logGroup name="cpm Log 1d 2y Avg" />
      </property>
    </tag>
    <tag name="Tag_2">
      <property name="VALUE">
        <logGroup name="cpm Log 1h 1y Avg" />
        <logGroup name="cpm Log 1d 2y Avg" />
      </property>
    </tag>
    <tag name="Tag_3">
      <property name="VALUE">
        <logGroup name="cpm Log 1h 1y Avg" />
        <logGroup name="cpm Log 1d 2y Avg" />
      </property>
    </tag>
  </tagGroup>
</configuration>