invoke | 易学教程

How can we call Invoke(Delegate) method from a Microsoft Office Add-in?

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问题 Question : How can we use Invoke(...) method in a Microsoft Office 2010-2016 VSTO project. Or, are there any work around, alternatives etc for a VSTO project? Background : I am trying to implement a source code of a third party Windows Forms application into my Microsoft Office VSTO add-in project. The third party vendor has provided its users a sample/example as a Windows Form project with source code and has asked its users to mimic that code to their other projects (WPF, Office Solutions

How can we call Invoke(Delegate) method from a Microsoft Office Add-in?

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Invoke in Class in c# winforms

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问题 I have a thread running in a class that needs to update value of textbox but invoke does not appear in class. Any idea how to do it? using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading; using System.Text.RegularExpressions; using System.Windows.Forms; using System.IO; using CheckedBoxSerpCrawler; namespace SERP_Crawler { class Crawl { public Crawl() { var t = new Thread(() => { for (int i = 2; i < (pagesToScroll / 10); i++) { //Here i

C# Invoke control from different thread

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问题 I'm working on a server program, which uses multithreading. The problem is, there are multiple classes and alot of threads, which all need access to a certain TextBox. (tbLog) The method (Log) looks like like this: using System; using System.Windows.Forms; using System.ComponentModel; namespace Server { public delegate void Logs(string message); public partial class Menu : Form { public Menu() { InitializeComponent(); } public void Log(string message) { if (this.tbLog.InvokeRequired) this

InvalidOperationException when using Invoke before the form was opened

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来源： https://stackoverflow.com/questions/34966578/invalidoperationexception-when-using-invoke-before-the-form-was-opened

InvalidOperationException when using Invoke before the form was opened

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来源： https://stackoverflow.com/questions/34966578/invalidoperationexception-when-using-invoke-before-the-form-was-opened

I want to print hi GrandFather;but it seems to print hi father

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问题 I want to print hi GrandFather But it seems to print hi father. And I am not understand how to diff the use between findSpecial and findVirtual I want someone can help me. Thank you class GrandFather{ void thinking(){ System.out.println("hi GrandFather"); } } class Father extends GrandFather{ void thinking(){ System.out.println("hi Father"); } } class Son extends Father{ void thinking(){ MethodType mt=MethodType.methodType(void.class); //MethodHandle mh=MethodHandles.lookup().findVirtual

NullReferenceException when debugging and using invoke

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问题 I found an interesting behavior yesterday while debugging a Windows Forms application, please refer to this code: bool enter = false; Debugger.Break(); if (enter) // Force to enter the if clause, read next comment { bool a = false; // Bypass previous IF check in debug using 'Set Next Statment (CTRL-SHIFT-F10)' here // Will throw null reference exception // If I don't use invoke everything works fine Invoke(new MethodInvoker(() => { a = true; })); } So if I force to enter an IF clause that was

java.lang.reflect.InvocationHandler中invoke()方法调用时机

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Java中动态代理的实现，关键就是这两个东西：Proxy、InvocationHandler，下面从InvocationHandler接口中的invoke方法入手，简单说明一下Java如何实现动态代理的。 invoke方法的完整形式如下： public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { method.invoke(obj, args); return null; } 首先猜测一下： method是调用的方法，即需要执行的方法； args是方法的参数； proxy，这个参数是什么？以上invoke()方法的实现即是比较标准的形式，我们看到，这里并没有用到proxy参数。查看JDK文档中对Proxy有如下说明： A method invocation on a proxy instance through one of its proxy interfaces will be dispatched to the invoke method of the instance's invocation handler, passing the proxy instance,a java.lang.reflect. Method object identifying

Java动态代理与CGLIB

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1. 静态代理模式因为需要对一些函数进行二次处理，或是某些函数不让外界知道时，可以使用代理模式，通过访问第三方，间接访问原函数的方式，达到以上目的，来看一下代理模式的类图： interface Hosee{ String sayhi(); } class Hoseeimpl implements Hosee{ @Override public String sayhi() { return "Welcome oschina hosee's blog"; } } class HoseeProxy implements Hosee{ Hosee h; public HoseeProxy(Hosee h) { this.h = h; } @Override public String sayhi() { System.out.println("I'm proxy!"); return h.sayhi(); } } public class StaticProxy { public static void main(String[] args) { Hoseeimpl h = new Hoseeimpl(); HoseeProxy hp = new HoseeProxy(h); System.out.println(hp.sayhi()); } } 1.1 静态代理的弊端