private static object ToEnum(object source, Type target, CultureInfo culture)
{
try
{
if (source?.GetType() == typeof(string))
{
return Enum.Parse(target, (string) source);
}
var intValue = REGISTERED[target](source.ToString(), culture);
return Enum.ToObject(target, intValue);
}
catch (ArgumentException)
{
throw ConvertException.CannotConvertValue(target, source);
}
}
private static object TryArray(object source, Type target)
{
var elementType = target.GetElementType();
var castMethod = typeof(Enumerable).GetMethod("Cast")
.MakeGenericMethod(new System.Type[] {elementType});
var toArrayMethod = typeof(Enumerable).GetMethod("ToArray")
.MakeGenericMethod(new System.Type[] {elementType});
try
{
var castedObjectEnum = castMethod.Invoke(null, new[] {source});
var castedObject = toArrayMethod.Invoke(null, new[] {castedObjectEnum});
return castedObject;
} catch
{
throw ConvertException.CannotConvert(target, source);
}
}
public static object To(object source, Type target, CultureInfo culture)
{
try
{
if (source == null ||
target == typeof (object) ||
source.GetType() == target ||
source.GetType().GetInterfaces().Any(t => t == target))
{
return source;
}
if (target.IsGenericType && target.GetGenericTypeDefinition() == typeof(Nullable<>))
{
var realTarget = target.GetGenericArguments()[0];
if (source.GetType() == realTarget ||
source.GetType().GetInterfaces().Any(t => t == realTarget))
{
return source;
}
if (realTarget.IsEnum)
{
return ToEnum(source, realTarget, culture);
}
}
if (target.IsEnum)
{
return ToEnum(source, target,culture);
}
if (target.IsArray)
{
return TryArray(source, target);
}
var formattable = source as IFormattable;
var text = formattable?.ToString(null, culture) ?? source.ToString();
ConvertTo convertTo = null;
if(!REGISTERED.TryGetValue(target, out convertTo)) throw ConvertException.CannotConvert(target, source);
return convertTo(text, culture);
}
catch (FormatException)
{
throw ConvertException.CannotConvert(target, source);
}
}