} // GetItem
public virtual string ToFormattedString()
{
var tbl = new SortedTable <string, string, string>();
foreach (var pair in this.data)
{
string key = pair.Key.ToString();
foreach (var pp in pair.Value)
{
tbl[key, pp.Key.ToString()] = pp.Value == null
? "- null -"
: pp.Value.Value.ToString("N6", CultureInfo.InvariantCulture);
} // for each column
} // for each
return(tbl.ToFormattedString());
} // ToFormattedString