System.Dynamic.CreateInstanceBinder.FallbackCreateInstance C# (CSharp) Метод

FallbackCreateInstance() публичный Метод

Performs the binding of the dynamic create operation if the target dynamic object cannot bind.
public FallbackCreateInstance ( DynamicMetaObject target, DynamicMetaObject args ) : DynamicMetaObject
target DynamicMetaObject The target of the dynamic create operation.
args DynamicMetaObject The arguments of the dynamic create operation.
Результат DynamicMetaObject
        public DynamicMetaObject FallbackCreateInstance(DynamicMetaObject target, DynamicMetaObject[] args)
        {
            return FallbackCreateInstance(target, args, null);
        }

Same methods

CreateInstanceBinder::FallbackCreateInstance ( DynamicMetaObject target, DynamicMetaObject args, DynamicMetaObject errorSuggestion ) : DynamicMetaObject

Usage Example

Пример #1
0
        public override DynamicMetaObject BindCreateInstance(CreateInstanceBinder binder, DynamicMetaObject[] args)
        {
            var constructors = ReflType.GetConstructors();
            var ctors = constructors.Where(c => c.GetParameters().Length == args.Length);
            var res = new List<ConstructorInfo>();

            foreach (var c in ctors)
            {
                if (RuntimeHelpers.ParametersMatchArguments(c.GetParameters(), args))
                {
                    res.Add(c);
                }
            }
            if (res.Count == 0)
            {
                // Binders won't know what to do with TypeModels, so pass the
                // RuntimeType they represent.  The binder might not be Sympl's.
                return binder.FallbackCreateInstance(
                    RuntimeHelpers.GetRuntimeTypeMoFromModel(this),
                    args);
            }
            // For create instance of a TypeModel, we can create a instance
            // restriction on the MO, hence the true arg.
            var restrictions = RuntimeHelpers.GetTargetArgsRestrictions(this, args, true);
            var ctorArgs = RuntimeHelpers.ConvertArguments(args, res[0].GetParameters());
            return new DynamicMetaObject(
                // Creating an object, so don't need EnsureObjectResult.
                Expression.New(res[0], ctorArgs),
                restrictions);
        }
All Usage Examples Of System.Dynamic.CreateInstanceBinder::FallbackCreateInstance