reflection

问题 Is it possible to see which constructor was the generic one? internal class Foo<T> { public Foo( T value ) {} public Foo( string value ) {} } var constructors = typeof( Foo<string> ).GetConstructors(); The property 'ContainsGenericParameters' returns me for both constructors false. Is there any way to find out that constructors[0] is the generic one? They both have the same signature, but I would like to call the "real" string one. EDIT: I want to invoke the given type using ilGen.Emit(

问题 Is it possible to see which constructor was the generic one? internal class Foo<T> { public Foo( T value ) {} public Foo( string value ) {} } var constructors = typeof( Foo<string> ).GetConstructors(); The property 'ContainsGenericParameters' returns me for both constructors false. Is there any way to find out that constructors[0] is the generic one? They both have the same signature, but I would like to call the "real" string one. EDIT: I want to invoke the given type using ilGen.Emit(

问题 I have a scneario in which I want to use reflection to do validation using FluentValidation. Someting like this: public class FooValidator : AbstractValidator<Foo> { public FooValidator(Foo obj) { // Iterate properties using reflection var properties = ReflectionHelper.GetShallowPropertiesInfo(obj); foreach (var prop in properties) { // Create rule for each property, based on some data coming from other service... //RuleFor(o => o.Description).NotEmpty().When(o => // this works fine when foo

问题 I've specified type in a variable: Type hiddenType . I need to create a Func<T> delegate where T is of type specified in mentioned variable and assign an method: var funcType = typeof(Func<>).MakeGenericType(hiddenType); Func<object> funcImplementation = () => GetInstance(hiddenType); var myFunc= Delegate.CreateDelegate(funcType , valueGenerator.Method); It doesn't works - because funcImplementation is returns object instead of desired. At runtime, it will surely be an instance of type

问题 I've specified type in a variable: Type hiddenType . I need to create a Func<T> delegate where T is of type specified in mentioned variable and assign an method: var funcType = typeof(Func<>).MakeGenericType(hiddenType); Func<object> funcImplementation = () => GetInstance(hiddenType); var myFunc= Delegate.CreateDelegate(funcType , valueGenerator.Method); It doesn't works - because funcImplementation is returns object instead of desired. At runtime, it will surely be an instance of type

问题 I'm using MVC and have a situation where in my OnActionExecuting() I need to determine if the Action method that is about to execute is decorated with an attribute, the AuthorizeAttribute in particular. I'm not asking if authorization succeeded/failed, instead I'm asking does the method require authorization. For non-mvc people filterContext.ActionDescriptor.ActionName is the method name I'm looking for. It is not, however, the currently executing method; rather, it is a method that will be

问题 I'm using MVC and have a situation where in my OnActionExecuting() I need to determine if the Action method that is about to execute is decorated with an attribute, the AuthorizeAttribute in particular. I'm not asking if authorization succeeded/failed, instead I'm asking does the method require authorization. For non-mvc people filterContext.ActionDescriptor.ActionName is the method name I'm looking for. It is not, however, the currently executing method; rather, it is a method that will be

问题 I'm using MVC and have a situation where in my OnActionExecuting() I need to determine if the Action method that is about to execute is decorated with an attribute, the AuthorizeAttribute in particular. I'm not asking if authorization succeeded/failed, instead I'm asking does the method require authorization. For non-mvc people filterContext.ActionDescriptor.ActionName is the method name I'm looking for. It is not, however, the currently executing method; rather, it is a method that will be

问题 I have a problem with androidx.appcompat:appcompat:1.1.0. It's a new problem because on androidx.appcompat:appcompat:1.0.2 it does not exist. I have a code that uses reflection to get mPopup Field from the spinner and set its height. It works very well on appcompat:1.0.2 but not on androidx.appcomppat:appcompat:1.1.0. The code is private void setPopUp() { try { Field popup = getPopupField(); // Get private mPopup member variable and try cast to ListPopupWindow final android.widget

问题 I have a problem with androidx.appcompat:appcompat:1.1.0. It's a new problem because on androidx.appcompat:appcompat:1.0.2 it does not exist. I have a code that uses reflection to get mPopup Field from the spinner and set its height. It works very well on appcompat:1.0.2 but not on androidx.appcomppat:appcompat:1.1.0. The code is private void setPopUp() { try { Field popup = getPopupField(); // Get private mPopup member variable and try cast to ListPopupWindow final android.widget