activator

问题 I'm just getting started with Unity. I am still wondering what its advantages are. UnityContainer().Resolve<T>() which can return a concrete instance of the type that is registered for the generic type T . I think I can also use Activator.CreateInstance<T>() . Activator is a built-in class in the .NET Framework, so I am wondering what the distinct feature for Unity is? 回答1: MSDN states these as the advantages of Unity Container: Simplified object creation, especially for hierarchical object

问题 I have a class which has the following constructor public DelayCompositeDesigner(DelayComposite CompositeObject) { InitializeComponent(); compositeObject = CompositeObject; } along with a default constructor with no parameters. Next I'm trying to create an instance, but it only works without parameters: var designer = Activator.CreateInstance(designerAttribute.Designer); This works just fine, but if I want to pass parameters it does not: var designer = Activator.CreateInstance

问题 I have the following procedure private static IMyInterface OpenInstance( string assemblyPath, string classType, string assemblyName, out AppDomain domainInstall) { IMyInterface interface = null; AppDomainSetup domaininfo = new AppDomainSetup(); domaininfo.ApplicationBase = assemblyPath; domainInstall = AppDomain.CreateDomain("PathInstall", null, domaininfo); ObjectHandle handleService = null; try { handleService = Activator.CreateInstance( domainInstall, assemblyName, classType, true, System

问题 I have the following procedure private static IMyInterface OpenInstance( string assemblyPath, string classType, string assemblyName, out AppDomain domainInstall) { IMyInterface interface = null; AppDomainSetup domaininfo = new AppDomainSetup(); domaininfo.ApplicationBase = assemblyPath; domainInstall = AppDomain.CreateDomain("PathInstall", null, domaininfo); ObjectHandle handleService = null; try { handleService = Activator.CreateInstance( domainInstall, assemblyName, classType, true, System

问题 I'm tossing around the idea of using the Activator class in order to get access to resources in an assembly that I would otherwise create a circular reference for (dependency injection). I've done it before with vanilla classes that I needed a reference to, but my question is: can I use the Activator to get access to a static class? The part that's tripping me up is that the Activator returns to you a instance of the object, whereas a static class has no instance. Is this possible? 回答1: You

问题 I try to set a Nullable<> property dynamicly. I Get my property ex : PropertyInfo property = class.GetProperty("PropertyName"); // My property is Nullable<> at this time So the type could be a string or int I want to set my property by reflection like property.SetValue(class,"1256",null); It's not working when my property is a Nullable<> Generic. So i try to find a way to set my property. To know the type of my nullable<> property i execute Nullable.GetUnderlyingType(property.PropertyType)

问题 The below code won't work, I wanted to know how I can dynamically cast an instance to a type determined at runtime? Convert.ChangeType() returns an Object that still needs to be cast. So does all attempts to Invoke() a GetConstructor() or Activator.CreateInstance(), see below. At some point I need to explicitly cast in code, I'm hoping to avoid it or push it out as far as possible. Type type = Type.GetType ("RandomChildClass"); Object obj = Activator.CreateInstance (type, new Object[]{

问题 The problem I have is that CreateInstance returns null. Here is the code: if(spattmono[0] != null) { if((SpecialAttack) System.Activator.CreateInstance( spattmono[0].GetClass()) == null) { Debug.Log("DUMB ACTIVATOR!!!"); } //combo.SetSpecialAttack(spattack); } Attack and SpecialAttack are both classes that store basic information, and inherit from UnityEngine.Object . Attmono and spattmono are both MonoScript arrays, attmono being able to hold 16 and spattmono being able to hold 4. They get

问题 This question already has answers here : Pass An Instantiated System.Type as a Type Parameter for a Generic Class (6 answers) Closed 5 years ago . In C# I have the following object: public class Item { } public class Task<T> { } public class TaskA<T> : Task<T> { } public class TaskB<T> : Task<T> { } I want to dynamically create TaskA or TaskB using C# reflection ( Activator.CreateInstance ). However I wouldn't know the type before hand, so I need to dynamically create TaskA based on string

问题 I'm trying to refactor a piece of code and ran out of options I can think off. This is the original code I had: if (WebConfigSettings.ComPartition == null && HttpContext.Current != null) Nses = new NSession(); else Nses = (INSession)Marshal.BindToMoniker(string.Format("partition:{0}/new:NuntioServer.NSession", WebConfigSettings.ComPartition)); AND if (WebConfigSettings.ComPartition == null && HttpContext.Current != null) apses.Wses = new WSession(); else apses.Wses = (IWSession)Marshal