late-binding

问题 I can't get a grip on how the various "Init", "Accumulate" ... methods work, to enable calling a method located inside a DLL, from VB.Net code. Let's say the method to call has the following signature : public double ComputeMeanPosition(ref SortedList<DateTime, double> posByTime) Would you please kindly point me to an actual example of the use of the methods, or simply give me a few hints as how to actually pass the parameters to the method, call it and fetch the results ? @Olivier Jacot

问题 I have difficulty converting early binding code to late binding. I have tried several times but it doesn't work properly. When it comes to early binding it works well. Here is my code and I'd like to ask you to show me how it should look like and in which places I have to make changes and for what. Sub PrezentacjaPP() Dim PowerPointA As PowerPoint.Application 'aplikacja PowerPoint Dim PrezentacjaPP As PowerPoint.Presentation 'prezentacja PowerPoint Dim NazwaPP As String 'nazwa pliku z

问题 I have difficulty converting early binding code to late binding. I have tried several times but it doesn't work properly. When it comes to early binding it works well. Here is my code and I'd like to ask you to show me how it should look like and in which places I have to make changes and for what. Sub PrezentacjaPP() Dim PowerPointA As PowerPoint.Application 'aplikacja PowerPoint Dim PrezentacjaPP As PowerPoint.Presentation 'prezentacja PowerPoint Dim NazwaPP As String 'nazwa pliku z

问题 Using winforms, C# FW4.5 to open an excel sheet with late bound, like this: objExcel = CreateObject("Excel.Application") Now I want to use the InvokeMember method, but I don't know all the members of excel I can invoke. For example, I know I can call it like this: InvokeMember("Close",... in order to close excel, but where can I find list of all the members I can invoke and what each one of them does? 回答1: Late-bound Using winforms, C# FW4.5 to open an excel sheet with late bound, like this:

问题 I am using .NET 4.0 and dynamic to invoke members on a System.__ComObject at runtime. I instanciate the object in the following way: dynamic DrApi; DrApi = Activator.CreateInstance(SprImportedTypes.DrApi); The types are declared in a static class like this: internal static Type DrApi = Type.GetTypeFromProgID("DrApi.DrApi.1"); Since the object is dynamic, I can invoke methods without any difficulty: string vers = string.Empty; DrApi.Version(ref vers); For consolidation and localized error

问题 I'm going to give an example of using System.Data.SQLite.DLL which is a mixed assembly with unmanaged code: If I execute this : var assembly= Assembly.LoadFrom("System.Data.SQLite.DLL") No exceptions are thrown, but if I do this : var rawAssembly = File.ReadAllBytes("System.Data.SQLite.DLL"); var assembly = Assembly.Load(rawAssembly); The CLR throws a FileLoadException with "Unverifiable code failed policy check. (Exception from HRESULT: 0x80131402)". Let's say I'm trying to load this

问题 I'm going to give an example of using System.Data.SQLite.DLL which is a mixed assembly with unmanaged code: If I execute this : var assembly= Assembly.LoadFrom("System.Data.SQLite.DLL") No exceptions are thrown, but if I do this : var rawAssembly = File.ReadAllBytes("System.Data.SQLite.DLL"); var assembly = Assembly.Load(rawAssembly); The CLR throws a FileLoadException with "Unverifiable code failed policy check. (Exception from HRESULT: 0x80131402)". Let's say I'm trying to load this

问题 I like to use early binding in my VBA projects, since I like the auto-complete of method names, etc. during development. I also like the confidence of knowing that the compiler will warn me if I've mis-spelled a method name. However, to use early binding I need to add a reference to the relevant library (for example, the "Microsoft Scripting Runtime"). That's fine for "standard" libraries like that, but sometimes I want to use a library that may or may not be present on the user's machine.

问题 Currently I'm try to understand some of aspects regarding programming in C#. Now I'm learning LateBinding . I understand how to create some simple program like the one below. class Program { static void Main(string[] args) { Console.WriteLine("Try to do something with late bindings"); Assembly a = null; try { a = Assembly.Load("CarLibrary"); Console.WriteLine("1"); } catch (FileNotFoundException ex) { Console.WriteLine(ex.Message); } if (a == null) { CreateUsingLateBinding(a); } Console

问题 I have two C# projects, LibraryA and LibraryB, each producing a separate DLL. LibraryA makes use of the classes in LibraryB. LibraryB needs to make a TypeForwardedTo reference to class in LibraryA. (See this question for background.) Normally, I would resolve either issue by adding a project reference, but I can't do both because VS doesn't allow circular references. The only reason I need the B-to-A reference is for the TypeForwardedTo link. I've tried using Type.GetType(string) but the