/// <summary>
/// Searches a <see cref="XContainer" /> for the first <see cref="XElement" /> instance with the specified
/// specified <see cref="XName" /> and then parses and returns its value as a
/// base-64 encoded byte array.
/// </summary>
/// <param name="container">The <see cref="XContainer" /></param>
/// <param name="name">The attribute <see cref="XName" />.</param>
/// <param name="def">The default value.</param>
/// <returns>The parsed value on success, the default value on failure.</returns>
public static byte[] ParseElementBase64(this XContainer container, XName name, byte[] def)
{
var element = container.Element(name);
var value = element != null ? element.Value : null;
return(Serialize.ParseBase64(value, def));
}
/// <summary>
/// Searches a <see cref="XElement" /> for the first attribute instance with the
/// specified <see cref="XName" /> and then parses and returns its value as a
/// base-64 encoded byte array.
/// </summary>
/// <param name="element">The <see cref="XElement" /></param>
/// <param name="name">The attribute <see cref="XName" />.</param>
/// <param name="def">The default value.</param>
/// <returns>The parsed value on success, the default value on failure.</returns>
public static byte[] ParseAttributeBase64(this XElement element, XName name, byte[] def)
{
var attribute = element.Attribute(name);
var value = attribute != null ? attribute.Value : null;
return(Serialize.ParseBase64(value, def));
}
/// <summary>
/// Parses the base-64 encoded string passed unless the string is
/// null or the parse failed, in which case the default value
/// will be returned.
/// </summary>
/// <param name="columnName">The column name.</param>
/// <param name="def">The default value.</param>
/// <returns>The parsed value on success, the default value on failure.</returns>
public byte[] ParseBase64(string columnName, byte[] def)
{
return(Serialize.ParseBase64(GetColumn(columnName), def));
}