xml values to string c#

string xmlData = @"<Erro total=""0"" razao=""PEIN"" inicio=""0"" fim=""0"">
                    <Criterio>
                    <inDistrito/>
                    <inConcelho/>
                    <inLocal/>
                    <inRua/>
                    <inPorta/>
                    <inCodPos/>
                    <inCliente/>
                    <inIdLocal/>
                    <inIdRua/>
                    <inEp/>
                    <inApartado/>
                    <inIdEp/>
                    <inPag>1</inPag>
                    <inMaxPag>20</inMaxPag>
                    <Id_Pesq>68083086</Id_Pesq>
                    </Criterio>
                    </Erro>";

XElement element = XElement.Parse(xmlData);
Dictionary<string,object> values = new Dictionary<string,object>();
element.Element("Criterio").Elements()
    .Select (e => {
        values.Add(e.Name.ToString(),e.Value);
        return e;
    }).Count ();

//[Edit] Modified as pointed out by Losmac [/Edit]

XElement element = XElement.Parse(xmlData);
List<KeyValuePair<string,object>> values = element.Element("Criterio").Elements()
	.Select (e => new KeyValuePair<string,object>(
            e.Name.ToString(),e.Value)
        ).ToList();

//values
//Key             Value
//inDistrito
//inConcelho
//inLocal
//inRua
//inPorta
//inCodPos
//inCliente
//inIdLocal
//inIdRua
//inEp
//inApartado
//inIdEp
//inPag                1
//inMaxPag            20
//Id_Pesq       68083086

DataSet ds = new DataSet("Whatev");

System.IO.TextReader txtReader = new System.IO.StringReader(XmlString);
System.Xml.XmlReader reader = new System.Xml.XmlTextReader(txtReader);
ds.ReadXml(reader);
foreach (System.Data.DataRow DrW in ds.Tables[0].Rows)
{
    foreach (System.Data.DataColumn DC in DrW.Table.Columns)
    {
        Console.Write(DC.ColumnName + "=" + DC.ToString());
    }
}

XmlTextReader reader = new XmlTextReader("http://www.ctt.pt/pdcp/xml_pdcp");
while (reader.Read())
{
    switch (reader.NodeType)
    {
        case XmlNodeType.Element: // The node is an element.
            Console.Write("<" + reader.Name);
            Console.WriteLine(">");
            break;

        case XmlNodeType.Text: //Display the text in each element.
            Console.WriteLine(reader.Value);
            break;

        case XmlNodeType.EndElement: //Display the end of the element.
            Console.Write("</" + reader.Name);
            Console.WriteLine(">");
            break;
    }
}