Код ниже работает мечтательно. Но можно ли сделать его более компактным и использовать C # 'ish? Особенно у меня есть подозрения по двум вопросам.

Isn't it ugly (old C-style) filling fill a variable by using it as a in-parameter? Can the code be made more compact instead of going through a String?

C #

String
  connectionString = "...",
  sqlStatement = "select * from Test",
  output = "";

SqlDataAdapter adapter = new SqlDataAdapter(sqlStatement, connectionString);
DataSet dataSet = new DataSet("Contents");
adapter.Fill(dataSet, "Test");
StringWriter stringWriter=new StringWriter();
dataSet.WriteXml(new XmlTextWriter(stringWriter));
XmlDocument document = new XmlDocument();
output = stringWriter.ToString();
document.LoadXml(output);