[c#] Converting xml to string using C#

I have a function as below

public string GetXMLAsString(XmlDocument myxml)
    {
        XmlDocument doc = new XmlDocument();
        doc.LoadXml(myxml);

        StringWriter sw = new StringWriter();
        XmlTextWriter tx = new XmlTextWriter(sw);
        doc.WriteTo(tx);

        string str = sw.ToString();// 
        return str;
    }

i am passing an xml to this method from an another method.But in the doc.loadxml(), the system is expecting a string and since im passing an xml, it throws error.Pls help. Thanks in advance..

There's a much simpler way to convert your XmlDocument to a string; use the OuterXml property. The OuterXml property returns a string version of the xml.

public string GetXMLAsString(XmlDocument myxml)
{
    return myxml.OuterXml;
}

   public string GetXMLAsString(XmlDocument myxml)
    {
        using (var stringWriter = new StringWriter())
        {
            using (var xmlTextWriter = XmlWriter.Create(stringWriter))
            {
               myxml.WriteTo(xmlTextWriter);
               return stringWriter.ToString();
            }

        }    
}