I'm trying to obtain the value of the logicalName attribute of the main node of this xml file:

```
<?xml version="1.0" encoding="ISO-8859-1"?>
<ticketlayout xmlns="http://www.example.com/ticketlayout" logicalName="target.xml" deviceCode="1" measurement="mm" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.example.com/ticketlayout">
    <fontdefinition id="BarCode">
         <fontname>Code128bWin</fontname>
         <size measure="pt">16</size>
    </fontdefinition>
</ticketlayout>

```

I've tried to add the namespace "xsi", "<http://www.w3.org/2001/XMLSchema-instance>" this way:

```
XmlDocument fLayout = new XmlDocument();
fLayout.Load("myFile.xml");
XmlNamespaceManager nsmRequestLayout = new XmlNamespaceManager(fLayout.NameTable);
nsmRequestLayout.AddNamespace("xsi", "http://www.w3.org/2001/XMLSchema-instance");
string sValue = fLayout.SelectNodes("//ticketlayout", nsmRequestLayout)[0].Attributes["name"].Value;

```

But I get no nodes. I've tried without namespace and no nodes again, and son on.
¿Could please anyone help me?

Thanks in advance.