late-binding

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

问题 first of all, sorry for the title, I couldn't find a better one. The following code is a minimalized version of a problem I have in my Python program (I am a newbie btw.). def onClick(i): print "This is Button: " + str(i) return def start(): b = [0 for x in range(5)] win = Tkinter.Tk() for i in range(5): b[i] = Tkinter.Button(win,height=10,width=100,command=lambda : onClick(i)) b[i].pack() return What it does: Whatever Button I click, it says "This is Button: 4". What I want: First button

问题 Update # 2 I changed the values of the txtbox and submitbtns with a (0) (and also tried (1) as well), no changes. And I also need to note that the Button has a different name and I updated accordingly here as well. Dim TBox As String 'Name of object textbox to have value changed in Dim TBtn As String 'Name of object button to be pressed TBox = "masked1" TBtn = "button" If Not IE Is Nothing Then Set txtBox = IE.Document.getElementsByClassName(TBox)(0) Set submitBtn = IE.Document

问题 Referring to the answer by Jon Skeet here: Pass An Instantiated System.Type as a Type Parameter for a Generic Class I need to load a Generic type based on the name of the generic type, and the name of the type that is the type parameter for the generic. So from Jon's example I would have: string genName = "MyNamespace.Generic"; string itemName = "System.String"; I have the following code that will load a type based on the name of the type and a fully justified assembly name/path. It works

问题 There is a code: var myobject: OleVariant; begin myobject := CreateOleObject('SomeNamespace.SomeClass'); end; This COM object has events (for example OnClick). How should I connect to these events without importing TLB? 回答1: You are working with COM late-binding, so do you need write a lot of code to handle events. this task is not difficult if you know COM, basically do you need follow these steps. Create a new object(class) derived from TInterfacedObject that implements IDispatch implement

问题 I'm preparing a class on Visual Basic 2005 targeting Visual Basic 6 programmers migrating to the .NET platform. I would like a word of advice about whether to recommend them to always enable Option Strict or not. I've worked exclusively with C-style programming languages, mostly Java and C#, so for me explicit casting is something I always expect I have to do, since it's never been an option. However I recognize the value of working with a language that has built-in support for late-binding ,

问题 I'm trying to get my head around when early/late binding occurs in C#. Non-virtual methods are always early bound. Virtual methods are always late bound: the compiler inserts extra code to resolve the actual method to bind to at execution time and checks for type safety. So subtype polymorphism uses late binding. Calling methods using reflection is an example of late binding. We write the code to achieve this as opposed to the compiler. (E.g. calling COM components.) VB.NET supports implicit

问题 We are converting xml-based spring batch configuration to java config. In xml form of JdbcCursorItemReader we were using late binding: SELECT * FROM MY_TABLE_#{jobParameters[param1]} How can this be implemented using Java config syntax? 回答1: You can achieve this as follows: @Bean @StepScope public JdbcCursorItemReader jdbcCursorItemReader(@Value("#{jobParameters['param1']}") String param1) { return new JdbcCursorItemReaderBuilder<>() .sql("SELECT * FROM MY_TABLE_" + param1) // set other

问题 I have written a macro that exports from excel to powerpoint and have gotten it to work properly in Excel/Powerpoint 2013, 2010. However I tested it on another version of Excel 2010 and got a VBA error that it was missing powerpoint object library 15. I tried running the macro with powerpoint library 14 and was able to but it wasn't reformatting the slides or doing a lot of the formatting that I was doing. What is the best way/easiest way to install an object library. Can I browse and import

问题 Contrary to what I would think, multiple selected sheets are not a Worksheets object type. After multi-selecting 2 or more sheets. The way I get the selection is as so: var selection = ExcelApp.Selection; //Returns object type I've tried getting the "Name" property to try and give me a hint by using late binding with: string name = selection.GetType().InvokeMember("Name", System.Reflection.BindingFlags.GetProperty, null, selection, null).ToString(); But this throws errors for the given