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The Impossibly Fast C++ Delegates, Fixed

by Sergey Alexandrovich Kryukov

Derived work based on the article by Sergey Ryazanov "The Impossibly Fast C++ Delegates": this good solution is fixed and further developed using C++11.

Asynchronous Multicast Delegates in Modern C++

by David Lafreniere

A C++17 standards compliant delegate library capable of targeting any callable function synchronously or asynchronously

Variadic Delegates

by Anton Chibisov

This tutorial showcases how to implement C++ delegates which are capable of being bound to methods and functions having arbitrary signature, i.e., any number and type of parameters and return value.

Monad like programming with C#

by Muraad Nofal

A haskell monad/(applicative)functor like interface in C# that extends IEnumerable.

Latest Articles

Asynchronous Multicast Delegates in C++

by David Lafreniere

A C++ standards compliant delegate library capable of targeting any callable function synchronously or asynchronously

Asynchronous Multicast Delegates in Modern C++

by David Lafreniere

A C++17 standards compliant delegate library capable of targeting any callable function synchronously or asynchronously

Extract and manipulate event handler delegates of Windows form controls

by yutaraa

Get, move, copy and delete event handler delegates of Windows form controls.

C++/CLI: Storing Lambda in a Delegate

by Jon McKee

How to do it and why it works

All Articles

Delegates

C# what passes arguments to anonymous functions?

23 Mar 2018 by #realJSOP

Google is your friend. Anonymous Functions (C# Programming Guide) | Microsoft Docs[^]

Cannot convert lambda expression to type bool

11 Dec 2017 by ________________

You do not need to create delegate twice: public static bool CheckisOdd(int s) { if (s % 2 == 0) { return false; } else { return true; } }

Delegates, Events and Pass by ref in Java using bytecode Manipulation

15 May 2012 by abhinav_soni

Support for Delegates, Events and Pass by ref in Java using bytecode manipulation

How can I set thread handle in that thread

21 May 2016 by Abtin Bina

i have an object that it have a 'Thread' property like this class Client{ public Thread ClientThread; // it is that i want to change //some property //some method }how can i set the ClientThread in a started threadlike what i have triedWhat I have...

[Concept] Delegate,Lamda Expression c# windows form

30 Nov 2013 by agent_kruger

i would like to know the concept of Delegates and lambda.Example code will be appriciated. Thanks In Advance.

Learning C# (Day 11): Events in C# (A Practical Approach)

6 Jan 2017 by Akhil Mittal

This article of the series "Diving into OOP" will explain all about events in C#. The article focusses more on practical implementations and less on theory.

Read Method with Generics & Delegate

11 Jul 2016 by Alberto Nuti

In a console application, there is often the need to ask (and validate) some data from users. For this reason, I have created a function that makes use of generics and delegates to speed up programming.

Calling functions one after other in event driven programming

23 Jan 2018 by Ammar Shaukat

I'm working on a software where software issues commands for hardware panel and once a command is issued, its response received after few seconds . there are different functions for different hardware commands like public void FunctionA() { StartCommandA(); } and other functions on the...

design-patterns

Calling functions one after other in event driven programming

23 Jan 2018 by Ammar Shaukat

Make a list of Action Delegates and add Status Code for each function . let's say 0 mean function has invoked and 1 mean function is not invoked yet. then use LINQ Query to check which function has called and which one is remaining. Change the status of function invocation from OnReponse ...

design-patterns

Procedural seamless noise texture generator

3 Feb 2015 by andrea contoli

Presentation and testing of some procedural bitmap creation algorithms .

Just let me know is the following code executed as asynchronously ?

12 Jul 2016 by Anisuzzaman Sumon

Dear Experts,Just let me know is the following code executed as asynchronously ?My Code is shown belowpublic class CompanyController : Controller {public delegate void CompanyAuditRecordKeeper(CompanyModel company, string operationType); public ActionResult Create(CompanyModel...

Variadic Delegates

13 Apr 2015 by Anton Chibisov

This tutorial showcases how to implement C++ delegates which are capable of being bound to methods and functions having arbitrary signature, i.e., any number and type of parameters and return value.

why we use Delegates or when should we? what is the real need of it?

9 Dec 2011 by awaisdar

consider me a very beginner and please answer the q.i headed that it is use to reference methods and events.one thing is fine, that we invoke event whenever we want grammatically. but what about methods?i think there is some threading concept?Asynchronous and Synchronous...

why we use Delegates or when should we? what is the real need of it?

9 Dec 2011 by awaisdar

i have some ques.i have understood the concept of handling the event using delegates (as some extent not whole). but there is some thing else here.Asynchronous and Synchronous Methods.1.What is the difference between the two? simple example.2. i have a method that takes 30 mint to complete,...

How can I push notification feature for my web application ( a small online store). I really am very confused

3 Nov 2015 by Ayesha_K

Somebody suggested me to do it with Jquery . I don't know where to start from but the scenario is that I need an online shopping store website,in which on clicking on 'ORDERNOW" button on "Add to cart"'s window ,the notification is pushed on admin panel which tells about that particular order's...

How to create an event in a c# wrapper for a c++ dll

4 Dec 2014 by barneyman

the easiest approach would be to write a COM object in the DLL - create an ATL simple object with a methods (say) HRESULT Register(IUnknown *eventCallback), HRESULT UnRegister(void)(don't bother with dual/dispatch, custom is fine, but make it automation safe)Use tlbimp (on the generated)...

Everything That You Need to Understand about Lambda Expressions

15 Jan 2015 by Bhushan Mulmule

This write-up will take you through all the steps that are required to understand lambda expression thoroughly.

How to receive event in sequence

4 Oct 2016 by BillW33

As _duDE_ said, if you send data packets asynchronously there is no way to know the order in which they will be received. What you have to do on the receiving end is to reassemble the packets into the correct order. To do this they must be sent with some field that indicates the correct order....

BackgroundWorker shows progress but main thread might need to show progress too

5 Apr 2012 by bobishkindaguy

SOLVED - PLEASE SEE COMMENTS BELOW IF YOU ARE INTERESTED IN HOW THIS WORKED OUT, SINCE IT IS A 2-PART SOLUTION, BOTH OF WHICH ARE POTENTIALLY USEFUL TO OTHERS.Often, users will go to my program's "import data" window to initiate an import of data from a file or spreadsheet to our database....

BackgroundWorker

Altering the way a function operates

7 Dec 2018 by C Pottinger

Hello Code Project Gurus I know it is possible to have delegates operate with values that are known at the time the delegate is called - that's simply a parameter e.g. Func areaOfCircle = r => Math.PI * Math.Pow(r, 2); Func diameterOfCircle = r => 2 *...

Unsubscribing from an event still it's getting fired many times, how to stop it?

5 Jun 2018 by Chander Parkash Mourya

DataReceived event should be subscribed before calling Open() method of SerialPort class. As per your result event is called many times- In my case event will be called only in case of any response comes from another paired port. For ex. Paired ports are - "COM5" "COM3" so when any...

Delegates with return type

30 May 2014 by CHill60

ProgramFOX has solved your problem, however you may also find this CodeProject article useful - C# - Delegates 101 - A Practical Example[^]

c# using delegates to communicate between forms and networkcommunicator class

29 Dec 2012 by Christian Graus

You can't do anything OO over the network, because you have two different exes running. You can't use delegates between two exes on two machines.

Anonymous Method in Delegates

2 Jun 2014 by CPallini

Here you are (see MSDN[^]) static void Main(string[] args) { Democlass d = new Democlass(); ExampleDelgate e1 = new ExampleDelgate(d.Add); ExampleDelgate e2 = delegate(int x, int y){ Console.WriteLine(x+y);}; // anonymous method e1(20, 10); e2(20,...

C++ universal-signature delegates

4 Feb 2019 by CPallini

As far as know, without considering 'dirty hacks' (trying to defeat the strongly typed nature of C++), you cannot do that. I would use just one function signature and then adapt all of my functions to comply with it. Within this approach you might possibly find useful std::function[^].

C# Tips – Using delegate in List.Find() Predicate

20 May 2012 by cpsglauco

How to use delegate in List.Find() predicate in C#

c# using delegates to communicate between forms and networkcommunicator class

29 Dec 2012 by Cyberbird85

Hello everyone!I'm trying to develop an application in c# i currently have a code similar to the one attached below.Basically what it does is:Having multiple form, each of which would like to send message through the network, using my NetworkCommunicator class's SendMessage method.The...

pass an interop callback from C#, via C++ CLI, to native C++

30 Dec 2013 by Daniel Brousser

solved by using interfaces, thanks

pass an interop callback from C#, via C++ CLI, to native C++

29 Dec 2013 by Daniel Brousser

the system:C# object ---> C++ CLI bridge ---> C++ native code.some functionality of the C# object, uses C++ objects (via CLI)I need to pass a delegate of a member C# function, all the layers down, to C++,so that C++ can call it when needed.Is this even possible?thanks.

C# Like Event Handlers Pattern in Java

26 Mar 2017 by Danilow

Simulating C# event handlers in Java

Altering the way a function operates

6 Dec 2018 by Dave Kreskowiak

You cannot change the delegate definition at runtime. A delegate is nothing but a pointer to a function. The parameter list of the delegate must match the parameter list of the function that it points to. If it doesn't you can unbalance the stack as the call is pushing parameters on the stack...

Asynchronous Multicast Delegates in Modern C++

19 Dec 2022 by David Lafreniere

A C++17 standards compliant delegate library capable of targeting any callable function synchronously or asynchronously

Asynchronous Multicast Delegates in C++

19 Dec 2022 by David Lafreniere

A C++ standards compliant delegate library capable of targeting any callable function synchronously or asynchronously

Events: Demystifying Common Memory Leaks

30 Aug 2013 by Dev Leader

Let’s see how events might be causing some leakage in your application.

Cannot convert lambda expression to type bool

11 Dec 2017 by dhivya N

I am a new learner of c#. I want to find a number is odd or not using delegate anonymous function. I am getting the the above error. Where am i going wrong? What I have tried: public delegate bool oddOREvenDelegate(int s); class Program { static void Main(string[] args) ...

Building OrderBy Lambda Expression from Property Name in C#

10 Sep 2014 by DiponRoy

Let's make a lambda expression from a property name of a particular entity, and use it for OrderBy shorting

Changing Button Property not reflecting in UI during Runtime in Windows Form Application C#

27 Mar 2014 by Divakar Raj M

I am trying to interactively change button properties in the UI visually. I have a sole button in my Windows Forms application and this is my code for the button clickprivate void button1_Click(object sender, EventArgs e) { button1.BackColor = Color.Red; ...

You Had Me at Delegate

4 Jul 2015 by Dominic D Williams

The power of delegates outside of events.

Flutter searchdelegate is not working with navigator 2.0 with routerdelegate

6 Oct 2021 by dotarsoyak

Hello I have an implementation of Flutter Navigator 2.0 in my app, wich one has a SearchDelegate implemented too, but when I do tap on the search box search button, my app launch an error, the console prints this message: I think I have a bad...

Doing Delegates Differently - Part 1

8 Nov 2015 by DotNetSteve

Using delegates to group, conquer cross cutting concerns and create dynamic validators

Doing Delegates Differently - Part 2

8 Nov 2015 by DotNetSteve

Using delegates to group, conquer cross cutting concerns and created dynamic validators

Extensions and Reflections and Generics oh my!

5 Mar 2017 by DotNetSteve

Creating an extension class for View Models to save public properties using Generics and Delegates, replacing a reflection implementation

Passing Data Between Forms Using Events & Delegates (C++/CLI)

18 Jan 2017 by Doug Langston

A Visual Studio 2015 project that shows one way to pass information between Windows Forms

.NET-Compiler-Platform

Delegates and events.

4 Jul 2012 by ErickTreeTops

i'm trying to understand delegates and events and wrote a simple app based on an example.namespace DelegateTest{ public partial class Form1 : Form { BroadcastClass B = new BroadcastClass(); ListenToClass1 L1 = new ListenToClass1(); ...

Delegation Issues in VB.NET

6 Jan 2012 by Estys

Yes, your second "if" is messing things up.Try If x.Text = "" Then x.Focus() ErrPvdr.SetError(x, "Cannot be a blank input") ElseIf x.Name = "txtUprice" And (Not IsNumeric(x.Text)) Then x.Focus() ErrPvdr.SetError(x, "Cannot...

How do I publish data to higher level class libraries from low level class library project

16 Dec 2021 by Eugene Rutsito

I have four (4) class libraries in c#. Three (3) (InitiatorModule, TransactorModule, LoggerModule) of which are higher level and one (1) (PublisherModule) is a lower level. All the three higher level projects have project reference to the lower...

Trying to pass function from master to content page with delegate, issue finding contentcallevent in contentpage

23 Apr 2018 by F-ES Sitecore

You need to tell the content page what the specific type of the master page is before you can use any public properties\methods on that master page. This can be done using the MasterType derective Working with ASP.NET Master Pages Programmatically[^] Master page has this dropdown ...

Where delegate in C# can be used in project

2 Jun 2020 by Gauravg9598

I want to know that where delegate in c# has been used in Dot Net Projects. How we can used delegate in Dot Net Projects. How to that in project where we use delegate What I have tried: I want to know that where delegate in c# has been used in...

Firing events in loop are not updating UI in sequence

29 Nov 2015 by George Jonsson

I think the problem is that you when you pass the event argument, you don't pass it is a value but as a reference. See Parameter passing in C#[^]As you only create one instance of MessageEventArgs me = new MessageEventArgs();, you only have one place in the memory where your data is...

multi-threading

Cannot convert lambda expression to type bool

11 Dec 2017 by George Swan

public static void Main (string[] args) { //define a delegate that takes an int and returns a bool Predicate CheckIsOdd=i=>i%2!=0; //call the delegate and write the result Console.WriteLine(CheckIsOdd(5)); //An alternative approach using an anonymous function...

Call method using reflection with better performance

19 Aug 2017 by Graeme_Grant

Expanding on Mehdi Gholam's solution, here is a real-life example of where the method ProcessFileType "discovers" the type of data that it needs to convert to, looks up the type of data, then executes the conversion from JSON string and returns a class structure of a specific type. // only some...

How to I invoke a delegate thread

16 Dec 2018 by Graeme_Grant

The UI runs in the main thread, so you can't access the UI from a different thread. So you have a flag that the Spinner Visibility is bound to using data binding, say is called IsBusy. Then you communicate to the UI via the flag. Secondly, as OriginalGriff mentioned, you then offload the...

BackgroundWorker

C++/CLI: create a delegate via reflection

17 Aug 2023 by hans.sch

I'm playing with C++/CLI and calling into a .NET assembly. There is no specific use case, I simply want to learn. I wrote the assembly in C#. It exports a class with a few methods, and a delegate type which is used in one of the methods:...

C# Register Two Events, but only one reaction, please help me

2 Nov 2011 by HAOYE850815

Dear guys, I am currently working on a GPS tracking software. It should implement a function to trigger GPS data logging if GPS enter in a specific area and stop logging after going out of boundary.Anyway, My problem is if I select GPS as a observable object and make a GPSMonitor class...

Trying to pass function from master to content page with delegate, issue finding contentcallevent in contentpage

22 Apr 2018 by helpwithmycode

INFORMATIVE BACKGROUND: I have a ddl control in master site, i would like to call the 'selectIndexChange event' that sits in master page, and i want to call it in a content page. the reason is because i have an adio.net function that populates a grid in my content page. when i select a new item...

Unable to Raise event from MasterPage

14 Nov 2013 by Imadoddin

Hi, I have a masterpage in which I have dropdown list, I want to handle SelectedIndexChanged Event of that dropdown list in cantent page.. So far I didMasterPage:Public Event SelectedIndexChange(ByVal sender As Object, ByVal e As System.EventArgs)Public Shared Sub...

Delegates name of method.

6 Jan 2015 by Inimicos

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace delegateexample{ delegate int somedelegate(int i); class someclass { public static int somemethod(int i) { return i...

Passing function pointer as a parameter to method

4 Oct 2017 by İsmail Fatih ILTAR

Hi, i have to write C# class and method from C codes. My C codes are below. function_ex takes function pointer which takes custom_pac_type_t pointer.Problem is about method declaration. i can't use Func cause there is a ref parameter. I must use delegates but i couldnt. How can i pass func...

Error on execution of a method (.NET / COM)

28 Jun 2013 by Jeneesh K. Velayudhan

Thank you, Ron Beyer...It worked...:)

static-code-analysis

Error on execution of a method (.NET / COM)

27 Jun 2013 by Jeneesh K. Velayudhan

I have one Initialize() in my class and I am calling a delegate wrapper method from this function as follows (the call back method will call around 20 times in a sec),public Initialize(){ CX_OUTPUT_CALLBACK cb = new CX_OUTPUT_CALLBACK(OutDelegateCb); ...

static-code-analysis

Unable to Raise event from MasterPage

14 Nov 2013 by Jobless Creature

This Link may be of help...Save & Exit in Web Application[^]

Calling functions one after other in event driven programming

23 Jan 2018 by johannesnestler

have a look at the Task class Task Class (System.Threading.Tasks)[^] and to the ContinueWith methods. This is what you want: call methods each in it's own Task (thread) - wait for method to execute while not blocking the rest of your app. After executing continue with next method call (in it's...

design-patterns

Simplifying Events in .NET

25 Jan 2015 by John L. Vidal

Events in .NET are great. There is the "event" keyword that gives a fast way to start to use them, but..

Asynchronous Programming

12 Nov 2013 by John Pravin

Asynchronous Programming with Task Parallel Library.

C++/CLI: Storing Lambda in a Delegate

1 Dec 2017 by Jon McKee

How to do it and why it works

Using Delegates to Address Common Programming Issues

25 Aug 2015 by K. Naveen. Bhat

The article shows how we can solve various technical problems easily with the help of delegates.

Native C++ communicate with C#

17 Nov 2014 by KarstenK

It is an easy task. Look at this code from Microsoft.You could ofcourse use your dll and function.

How to create an event in a c# wrapper for a c++ dll

5 Dec 2014 by KarstenK

I have added callback support to my article Calling all stations which handles now also callbacks from and into C++. Step through the code and see my solutions.

[Concept] Delegate,Lamda Expression c# windows form

30 Nov 2013 by Karthik_Mahalingam

Try these linkmight be useful for you.C# Delegates, Anonymous Methods, and Lambda Expressions – O My![^]this link contians basics of lambda very informative...

How to receive event in sequence

4 Oct 2016 by Leo Chapiro

If you send and receive the data asynchronous, there is no guarantee to get this data in the same sequence as sent.

Delegates (Delegate, Func, Predicate, Action and Lambda)

8 Nov 2014 by Mahdi K.

A detailed description for Delegate, Func, Predicate, Action and Lambda Expression.

Impersonation and Delegate in WCF

26 Mar 2012 by Manjunathabe011

Hi All,I have a scenario where I need to do double hop authentication. I want to Impersonate the Users in WCF service layer but want to pass the same Windows credentials of Client to DAL. My DB needs windows authentication. How can I achieve this. Thanks,Manju

how to get a result from MVC controller with delegate using ajax

24 Jul 2014 by Marisco

I'm having a tough time getting the result from my controller, it has a function that contains a delegate funciont passint as a parameter.so the result is awais empty and then goes back after its finished.HTLMName:

Delegates getting garbage collected

15 May 2020 by martonthenagy

This may be useful for You: .net - Call has been made on garbage collected delegate in C#? - Stack Overflow[^]

Delegates name of method.

6 Jan 2015 by Matt T Heffron

If I understand your question, you've almost got it correct in your code above: class Program { static void Main(string[] args) { somedelegate process = new somedelegate(someclass.somemethod); // NOTE: no parens () process(4); } ...

Delegates getting garbage collected

15 May 2020 by MAU787

hi alli have one application which calls one function from dll.that dll invokes one delegate for capturing fingerprint.but after 4-5 capture i m getting error..A callback was made on a garbage collected delegate of type...

C++/CLI: create a delegate via reflection

18 Aug 2023 by Maxim Kartavenkov

had you try the next way: int MyCallback(int i) {} public delegate int IntCallback(int i); IntCallback^ callback = gcnew IntCallback(MyCallback); // Use callback variable as an argument

Kerosene Dynamic Data Services

11 Mar 2014 by mbarbac

Implementing the Repository and Unit of Work Patterns dynamically using Kerosene ORM

How to create an event in a c# wrapper for a c++ dll

3 Dec 2014 by mccaber82

Hi,I come from a .net background and I am fairly new to developing in C++. I am building a library which carry's out low level functionality, wrapped by a C# library so it can be used in other projects.I am well used to events in C# and raising events when something meaningful happens. ...

Weird compiler behaviour...?

23 Dec 2012 by Mehdi Gholam

Posted from the comment:Check if the "optimize code" is set in your project.

Listening to all specified events of a from

14 Jun 2013 by Mehdi Gholam

Read the following :http://msdn.microsoft.com/en-us/library/ms228976.aspx[^]http://msdn.microsoft.com/en-us/library/system.reflection.eventinfo.addeventhandler.aspx[^]

Call method using reflection with better performance

18 Aug 2017 by Mehdi Gholam

First don't use reflection unless you need it and you know what you are doing, so if your method counts is low use a switch statement: switch(comm.Method) { case "method1" : this.Method1(comm.Data); break; ...// and so on } You can also use a Dictionary with...

I Have 2Dropdownlist Controls In Usercontrols And If I Selected Dropdownvalues Iwant To Show That Values In Aspx Textbox Controls

27 May 2014 by Member 10755393

hi this vijayi have 2dropdownlist controls in usercontrols and if i selected dropdownvalues iwant to show that values in aspx textbox controls using delegates and events,iwant clear code iam new for .net

Raise a personal event in timer_tick event

30 May 2016 by Member 12555296

I have create a small class CountDown , that contains a timer.Class is very simple : receive time target, and start a CountDown with a timer.When target is reached, my personal event fireusing System;using System.Collections.Generic;using System.Linq;using System.Text;using...

How to recieve response from server

26 Jul 2020 by Member 14686752

The client is in c# and the server is in C++. Client is as follows: client.cs namespace clinetspace { public class client { [DllImport("Server.dll")] static public extern void CallServer(IntPtr obj, int a); ...

DelegateCommand

How to remove all handler from an event of form using VB.NET?

5 Apr 2018 by Member 1960377

I am working on a window application (written using Vb.net).In the main form Load event another form 'frmcrew_managment' is also loaded.In this stage for RefreshClick event of Main form attaches 'Refreshadata' method ( handler) of 'frmcrew_managment' . As a result after the main form is loaded...

How to receive event in sequence

4 Oct 2016 by Member 7754814

Hi,I am facing issue while consuming data in event in window application. Data received is not in same sequence as sent from class where event is raised. Here is complete scenario.There are 2 threads. In one thread, I receive data packets over TCP continuously and put it in array. In other...

A AsyncCallback of a Delegate opens a non reponding form

19 Sep 2011 by Member 7835126

Hello!I'm trying to use a async Delegate to show and populate a form but the form show up and stays Not Responding.Normally the form opens OK when it's sync with the code.Example situation:Before Class:Public Delegate Sub MyAsyncDelegate()In primary sub:Dim del As...

Does anyone have a simple way of making this TreeView WinForm app multithreaded – the UI locks up.

20 Oct 2013 by Member 8392278

Does anyone have a simple way of making this TreeView WinForm app multithreaded – the UI locks up. I have experimented with the backgroundworker , treeview.invoke and delegates but need help in these areas. Thank you in advance for any assistance.

BackgroundWorker

use of invoke method with assigned method

13 Apr 2012 by Member 8404471

Hey everyone,I'm trying to send the value from a serial port via myPort.DataReceived() to a textlabel on my windows form. Error is of course, that I can't access the control from a different thread. I know i need to use invoke for that but can't get it right. I tried this:void...

What is the need of delegate than calling the normal function via object of the class ?

2 Apr 2016 by Member 9346617

lets' say I have 2 buttons. Add & Substract.I will write two seperate functions "Add" & "Substract" & i will call them accordingly on each button click.Then why should I go for delegate when things are already known to me in advance which function to call on which button click ?What I...

why events in ASP controls are defined as delegates

19 Dec 2011 by Mich_90

I would be grateful if you help me to find the answer.I have started working with ASP.NET controls and there appeared a question: "why events in ASP controls are defined as delegates, and not as methods"? Thank you in advance.

Listening to all specified events of a from

14 Jun 2013 by Michelle Phoenix

Hello,I am building a form which has various controls on it, and each control has various methods that are handled, such as onLoad, Click etc. When certain methods are fired, I need to write a log entry that that specific control's _something method was fired.However, instead of adding...

Passing a function name as parameter to function

27 Jun 2013 by MK-Gii

Hello Everyone, hello Tom,I got this solved and the link you gave me was very uselfull (the for delegates in MSDN)The solution for this was that I passed delegate to the function instead of passing the function name. And before that I assign the function to delegate like this:private...

Passing a function name as parameter to function

26 Jun 2013 by MK-Gii

Hello Guys,I am having a hard time with passing a function name as a parameter to another function.I have the following setup:1. There are 2 classes (A and B)2. I am trying to write a function in class A which would be executing methods from class B.I know I can pass a class instance...

use glutDisplayFunc(display) in my class

29 Oct 2013 by Mohammad Sharify

Hi allI use a class to write opengl program in C++,I want to use glutDisplayFunc(display)and this my display function:void graphic::dispaly(){ glClear(GL_COLOR_BUFFER_BIT); //call a function glutSwapBuffers();}Now ,I face this error:3 IntelliSense: argument of type...

Monad like programming with C#

18 Sep 2013 by Muraad Nofal

A haskell monad/(applicative)functor like interface in C# that extends IEnumerable.

Call method using reflection with better performance

19 Aug 2017 by MYQueries1

I am using the Invoke method to call method using reflection. Performance of this not great. Is there any other solution What I have tried: void ExecuteMethodViaReflection(TestObj comm) { var paramNames = comm.paramNames; //of type string array var paramData = comm.Data; //of type...

Dynamic Runtime Delegates Conversion

30 May 2017 by n.podbielski

Explanation how to convert from one delegate type to second delegate of unknown or dynamically created type when their signatures match.

Delegation Issues in VB.NET

5 Jan 2012 by Nara Har

Hello All,I have a form and I want to ensure that none of the input fields should be left blank and the txtUPrice should hold only numeric values.The below is the code that I devised.Initially when I checked for focus issues (Initial IF structure) it went fine. But when I...