private static bool TryGetEnumValue(Type resultType, string value, out object result, bool flagsEnumAllowed)
{
if (!resultType.IsEnum())
{
result = null;
return(false);
}
if (flagsEnumAllowed && resultType.IsDefined(_flagsAttribute.GetType(), false))
{
ulong union = 0;
foreach (string v in value.SplitAndTrimTokens(','))
{
FieldInfo enumField = resultType.GetField(v, BindingFlags.IgnoreCase | BindingFlags.Static | BindingFlags.FlattenHierarchy | BindingFlags.Public);
if (enumField == null)
{
throw new NLogConfigurationException($"Invalid enumeration value '{value}'.");
}
union |= Convert.ToUInt64(enumField.GetValue(null), CultureInfo.InvariantCulture);
}
result = Convert.ChangeType(union, Enum.GetUnderlyingType(resultType), CultureInfo.InvariantCulture);
result = Enum.ToObject(resultType, result);
return(true);
}
else
{
FieldInfo enumField = resultType.GetField(value, BindingFlags.IgnoreCase | BindingFlags.Static | BindingFlags.FlattenHierarchy | BindingFlags.Public);
if (enumField == null)
{
throw new NLogConfigurationException($"Invalid enumeration value '{value}'.");
}
result = enumField.GetValue(null);
return(true);
}
}
private static void ShowAttributes(MemberInfo attributeTarget)
{
Attribute[] attributes = Attribute.GetCustomAttributes(attributeTarget);
Console.WriteLine("Attributes applied to {0}: {1}",
attributeTarget.Name, (attributes.Length == 0 ? "None" : String.Empty));
foreach (Attribute attribute in attributes)
{
// Display the type of each applied attribute
Console.WriteLine(" {0}", attribute.GetType().ToString());
DebuggerDisplayAttribute dda = attribute as DebuggerDisplayAttribute;
if (dda != null)
{
Console.WriteLine(" Value={0}, Name={1}, Target={2}",
dda.Value, dda.Name, dda.Target);
}
FlagsAttribute flags = attribute as FlagsAttribute;
if (flags != null)
{
Console.WriteLine(flags.ToString());
Console.WriteLine(flags.GetType().Name);
}
}
}