public override bool TryConvert(System.Dynamic.ConvertBinder binder, out object result)
{
result = null;
if (binder.Type.GetTypeInfo().IsInterface)
{
_interfaceTypes.Insert(0, binder.Type);
result = Impromptu.DynamicActLike(Target, _interfaceTypes.ToArray());
return(true);
}
if (binder.GetType().GetTypeInfo().IsInstanceOfType(Target))
{
result = Target;
}
return(false);
}
public static dynamic CoerceConvert(object target, Type type)
{
if (target != null && !type.IsInstanceOfType(target) && DBNull.Value != target)
{
var delegateConversion = CoerceToDelegate(target, type);
if (delegateConversion != null)
{
return(delegateConversion);
}
if (type.IsInterface)
{
if (target is IDictionary <string, object> && !(target is ImpromptuDictionaryBase))
{
target = new ImpromptuDictionary((IDictionary <string, object>)target);
}
else
{
target = new ImpromptuGet(target);
}
target = Impromptu.DynamicActLike(target, type);
}
else
{
try
{
object tResult;
tResult = Impromptu.InvokeConvert(target, type, @explicit: true);
target = tResult;
}
catch (RuntimeBinderException)
{
Type tReducedType = type;
if (type.IsGenericType && type.GetGenericTypeDefinition().Equals(typeof(Nullable <>)))
{
tReducedType = type.GetGenericArguments().First();
}
if (target is IConvertible && typeof(IConvertible).IsAssignableFrom(tReducedType) && !typeof(Enum).IsAssignableFrom(tReducedType))
{
target = Convert.ChangeType(target, tReducedType, Thread.CurrentThread.CurrentCulture);
}
else
{ //finally check type converter since it's the slowest.
#if !SILVERLIGHT
var tConverter = TypeDescriptor.GetConverter(tReducedType);
#else
TypeConverter tConverter = null;
var tAttributes = tReducedType.GetCustomAttributes(typeof(TypeConverterAttribute), false);
var tAttribute = tAttributes.OfType <TypeConverterAttribute>().FirstOrDefault();
if (tAttribute != null)
{
tConverter =
Impromptu.InvokeConstructor(Type.GetType(tAttribute.ConverterTypeName));
}
#endif
if (tConverter != null && tConverter.CanConvertFrom(target.GetType()))
{
target = tConverter.ConvertFrom(target);
}
#if SILVERLIGHT
else if (target is string)
{
var tDC = new SilverConvertertDC(target as String);
var tFE = new SilverConverterFE
{
DataContext = tDC
};
var tProp = SilverConverterFE.GetProperty(tReducedType);
tFE.SetBinding(tProp, new System.Windows.Data.Binding("StringValue"));
var tResult = tFE.GetValue(tProp);
if (tResult != null)
{
target = tResult;
}
}
#endif
}
}
}
}
else if (((target == null) || target == DBNull.Value) && type.IsValueType)
{
target = Impromptu.InvokeConstructor(type);
}
else if (!type.IsInstanceOfType(target) && DBNull.Value == target)
{
return(null);
}
return(target);
}