public static String GetAttributeValueAsString(this XElement xel, String attributeName)
{
xel.CheckNotNull();
XAttribute xat = xel.Attribute(attributeName);
xat.CheckValueNotNullOrWhitespace();
// XML stores new lines as \n
return(xat.Value.Replace(Environment.NewLine, "\n")
.Replace("\r", "\n")
.Replace("\n", Environment.NewLine));
}
private static T GetAttributeValue <T>(this XElement xel, String attributeName) where T : struct, IConvertible
{
xel.CheckNotNull();
XAttribute xat = xel.Attribute(attributeName);
xat.CheckValueNotNullOrWhitespace();
try {
return(( T )Convert.ChangeType(xat.Value, typeof(T), XML_CULTURE));
}
catch (Exception ex) {
throw new ApplicationException("Could not convert attribute value '" + xat.Value + "' of attribute '" + attributeName + "' into type '" + typeof(T).FullName + "'!", ex);
}
}
public static Version GetAttributeValueAsVersion(this XElement xel, String attributeName)
{
xel.CheckNotNull();
XAttribute xat = xel.Attribute(attributeName);
xat.CheckValueNotNullOrWhitespace();
try {
return(Version.Parse(xat.Value));
}
catch (Exception ex) {
throw new ApplicationException("Could not convert attribute value '" + xat.Value + "' of attribute '" + xat.Name.LocalName + "' into type '" + typeof(Version).FullName + "'!", ex);
}
}
public static DateTime GetAttributeValueAsDateTime(this XElement xel, String attributeName)
{
xel.CheckNotNull();
XAttribute xat = xel.Attribute(attributeName);
xat.CheckValueNotNullOrWhitespace();
try {
return(DateTime.Parse(xat.Value, CultureInfo.InvariantCulture, DateTimeStyles.AdjustToUniversal));
}
catch (Exception ex) {
throw new ApplicationException("Could not convert attribute value '" + xat.Value + "' of attribute '" + xat.Name.LocalName + "' into type '" + typeof(DateTime).FullName + "'!", ex);
}
}
public static T GetAttributeValueAsEnum <T>(this XElement xel, String attributeName)
{
if (!typeof(T).IsEnum)
{
throw new ArgumentException("T must be an enumerated type!");
}
xel.CheckNotNull();
XAttribute xat = xel.Attribute(attributeName);
xat.CheckValueNotNullOrWhitespace();
try {
return(( T )Enum.Parse(typeof(T), xat.Value));
}
catch (Exception ex) {
throw new ApplicationException("Could not convert attribute value '" + xat.Value + "' of attribute '" + xat.Name.LocalName + "' into enum '" + typeof(T).FullName + "'!", ex);
}
}
