C# Active Directory, Create an Organizational Unit for each OU in an LDAP path?

DirectoryEntry parent;
String strOU = strPath.Substring(0, strPath.IndexOf(@","));
objOU = parent.Children.Add(strOU, "OrganizationalUnit");
objOU.CommitChanges();

string strPath = "OU=Test1,OU=Test2,OU=Test3,DC=Internal,DC=net";
// get just DC portion of distinguished name
int dcIndex = strPath.IndexOf("DC=");
string dcSubString = strPath.Substring(dcIndex);
// get just OU portion of distinguished name
string ouSubString = strPath.Substring(0, dcIndex -1);
string tempDistinguishedName = dcSubString;
string[] ouSubStrings = ouSubString.Split(',');
for (int i = ouSubStrings.Length - 1; i >= 0; i--)
{
    // bind
    DirectoryEntry parentEntry = new DirectoryEntry(tempDistinguishedName);
    // Create OU
    DirectoryEntry newOU = parentEntry.Children.Add(ouSubStrings[i], "OrganizationalUnit");
    newOU.CommitChanges();
    // create distinguishedName for next bind
    tempDistinguishedName = ouSubStrings[i] + "," + tempDistinguishedName;
    // clean up unmanaged resources
    newOU.Dispose();
    parentEntry.Dispose();
}