reflection

问题 This question already has answers here : Is it possible to get parameters' values for each frame in call stack in .NET (2 answers) Closed 6 years ago . From within a method call I need to "jump" three layers up the stack and retrieve the type and value of the parameters passed to that method. Getting the parameter type is easy but I couldn't find a way to get the value passed to a certain method on the stack. var st = new StackTrace(); var frames = st.GetFrames(); var methodParameters = frame

问题 This question already has answers here : Is it possible to get parameters' values for each frame in call stack in .NET (2 answers) Closed 6 years ago . From within a method call I need to "jump" three layers up the stack and retrieve the type and value of the parameters passed to that method. Getting the parameter type is easy but I couldn't find a way to get the value passed to a certain method on the stack. var st = new StackTrace(); var frames = st.GetFrames(); var methodParameters = frame

问题 Possible Duplicate: To get parent class using Reflection on C# I am trying to find an easy way of getting the inheritance tree of a certain type using reflection in C#. Let's say that I have the following classes; public class A { } public class B : A { } public class C : B { } How do I use reflection upon type 'C' to determine that its superclass is 'B', who in turn comes from 'A' and so on? I know that I can use 'IsSubclassOf()', but let's assume that I don't know the superclass that I am

问题 Related Related I want to dynamically invoke a MethodInfo object and have any exceptions that get thrown from inside of it pass outward as if it were called normally. I have two options it seems. They're outlined below. Option 1 maintains the type of the exception thrown by MyStaticFunction , but the StackTrace is ruined because of the throw . Option 2 maintains the StackTrace of the exception, but the type of the exception is always TargetInvocationException . I can pull out the

问题 I C# we do it through reflection. In Javascript it is simple as: for(var propertyName in objectName) var currentPropertyValue = objectName[propertyName]; How to do it in Python? 回答1: for property, value in vars(theObject).iteritems(): print property, ": ", value Be aware that in some rare cases there's a __slots__ property, such classes often have no __dict__ . 回答2: See inspect.getmembers(object[, predicate]). Return all the members of an object in a list of (name, value) pairs sorted by name

问题 Before heading back to business, I decided to take a few days off for recreational coding. A few 30-hour days without fresh air? Sounds fantastic, for a change. I've struggled with managed code generation over time and always wondered if there is a circular relationship between C# code, reflection and codedom. Never got around to exploring it sadly. So the goal is to create useless and annoyingly complex classes with nested generics, constraints, anonymous methods, delegates, nested complex

问题 I'm trying to call an android internal method to reboot the device. It's just an experiment, I would try to understand what I'm doing wrong. I know there are probably better methods to reboot (involving busybox?). Class watchdogClass = Class.forName("com.android.server.Watchdog"); Method getInstance = watchdogClass.getDeclaredMethod("getInstance"); Method rebootSystem = watchdogClass.getDeclaredMethod("rebootSystem", String.class); Object watchdogInstance = getInstance.invoke(null);

问题 Assume that class (B)'s public function has the return line: return (object)(new List<A>{Some elements}) where A is an internal and sealed class. I cannot change the code of A or B. After I call this function in B, how do I find the first element of that list. C# does not let me cast that list back into List<A> because A is internal. 回答1: Just because you can read the source code or disassemble the code, you should not rely on the current implementation, rather try to use the public interface

问题 can anyone help me? I have some reflection code that i have written and it seems to work well but it gives me an error when trying to pass in "this" to the GetValue. I am a little stuck, i think the problem is that i am running the reflection code in frmMain adn the AbCCompany is defined in another project but i have a reference. I get the error Field 'AbcCompany' defined on type 'MyApp.Companies.Config' is not a field on the target object which is of type 'MyApp.frmMain'. Here is the code..

问题 How do I calculate the reflection vector to this problem? Using the formula r = v - 2 (v.n)n I can get the reflection when the object is sat on the x or y axis however when using this formula when it isnt seems to give strange results. Any help would be greatly appreciated. Example of the problem 回答1: The normal vector n needs to be normalized. In your example, n should be (1/sqrt(2), 1/sqrt(2)) . 来源： https://stackoverflow.com/questions/58699100/how-to-find-reflection-vector-when-the-object