public Purse SelectPurse(string xPath)
{
if (string.IsNullOrEmpty(xPath))
{
throw new ArgumentNullException(nameof(xPath));
}
string text = SelectNotEmptyString(xPath);
Purse purse;
if (!Purse.TryParse(text, out purse))
{
throw new FormatException(string.Format(CultureInfo.InvariantCulture,
"The value of the element '{0}' is not in a correct format.",
xPath));
}
return(purse);
}
public Purse?SelectPurseIfExists(string xPath)
{
if (string.IsNullOrEmpty(xPath))
{
throw new ArgumentNullException(nameof(xPath));
}
string text = TrySelectNotEmptyString(xPath);
if (null == text)
{
return(null);
}
if (!Purse.TryParse(text, out var purse))
{
throw new FormatException(string.Format(CultureInfo.InvariantCulture,
"The value '{0}' of the element '{1}' is not in a correct format.", text, xPath));
}
return(purse);
}
