reflection

问题 I had a similar question before, but this one will need a different solution. I have object on my Model and object on my service. I need to set value of Model's object property to a value of properties coming from the service's List<TicketReportPropertyEntity> if both objects' properties are the same. This is a Model: public class MyModel{ public ObjectAEntity ObjectAData { get; set; } public ObjectBEntity ObjectBData { get; set; } } ObjectAEntity has a property called "SalesAmount" This is a

问题 Given an object obj , I can modify its properties by using something like obj.a.b.c = "new value" . However, I want to be able to do this programmatically, with the property's location in the form of an array. How can I make a function that looks like this: modifyProperty(obj, ["a", "b", "c"], "new value"); and is equivalent to obj.a.b.c = "new value"; ? 回答1: You could use Array#reduce for it, with a default object if no object is available. function modifyProperty(object, path, value) { var

问题 This question already has an answer here : Closed 7 years ago . Possible Duplicate: How to expose current assembly to CodeProvider I wrote a code which converts a string from a textbox in vb.net like in this exemple: how to convert string to code in c# But In this class I can't call any static variables and methods from main project. That is code vb.net: Dim vb As New VBCodeProvider() Dim icc As ICodeCompiler = vb.CreateCompiler() cp = New CompilerParameters cp.ReferencedAssemblies.Add(

问题 as far as i know, the only way to make the annotation take effect is reflection. Without reflection, java annotation become useless. Is this right? public class Main{ @SomeAnnotation(name="some",value="annotation") public void method(){ //do something. } public static void main(String...args){ Main main = new Main(); //Just call the method directly, How to make the @SomeAnnotation make sense? main.method(); } } For instance, you first get a java Method object, then check all the annotations

问题 I have a .class file and know nothing about the .class file, including class name, fields or methods. What I need to do is finding out everything about the class and instantiate an object of the class. Remember that we know nothing about inside the .class file, after calling getDeclareMethod() ,getDeclareFields() and getDeclareConstructor(), I know that it contains a filed of String str and a void method with one String parameter which try to assign a name to the variable str and a pure

问题 I've seen older posts here on SO, about one year old which would mean that they do not really cover .NET 4 or maybe even 3.5 on this topic. So here goes. If you with reflection were to fetch parameters for the current method ParameterInfo[] methodParams = MethodInfo.GetCurrentMethod().GetParameters(); Looping through each parameter will let you fetch the parameter-name however, there is only a "DefaultValue" which I guess is there because of the new Dynamic Parameters in .NET 4. However, my

问题 I want to route certain chars to methods, so that when the char is typed in the command-line the method is then executed. Based on the answer How to call a method stored in a HashMap, I'm mapping these chars to methods by using the "Command" design-pattern. However I want to generically implement this, so it seems that I need to implement reflection in order to use the Method class as a parameter. My attempt is getting a NullPointerException on the field private Method method in my anonymous

问题 I m learning java reflection. I tried System.exit(3); Class.forName("java.lang.System").getMethod("exit", Integer.TYPE).invoke(null, 3); and it works. I successfully also ran System.out.println(Class.forName("java.lang.System").getMethod("currentTimeMillis").invoke(null)); Now how can i invoke System.out.println reflectively java.lang.Class.forName("java.lang.System").getMethod("out.println", String.class).invoke(null, "Hi!"); is giving error. I know System does not have out function. So

问题 I am using reflection to get property (as in {get; set} properties) names and their value. I would like to optimize this reflection. I don't have access to the code of the client classes I am using the reflection on, but after figuring out the property names of the class involved I will be reusing the same properties again and again. I am doing this in an ASP.NET application and so I was thinking of storing some cached results in the Application (HttpContext.Current.Application) so the first

问题 MethodInfo method = typeof(T).GetMethod("Parse", new[] { typeof(string) }); parse = Delegate.CreateDelegate(typeof(Func<T,string>), method); T is a float in this case. However I am getting a Error binding to target method. Parse I believe is a static method. I have looked at other examples, but I can not figure out why it is not binding. 回答1: you have to swap T and string because the method returns a T not a string . I replaced T with float and following code works for me: MethodInfo method =