invoke

I'm curious about the differences between calling a Func directly vs using Invoke() on it. Is there a difference ? Is the first, syntactical sugar, and calls Invoke() underneath anyway ? public T DoWork<T>(Func<T> method) { return (T)method.Invoke(); } vs public T DoWork<T>(Func<T> method) { return (T)method(); } Or am I on the wrong track entirely :) Thanks. There's no difference at all. The second is just a shorthand for Invoke , provided by the compiler. They compile to the same IL. Invoke works well with new C# 6 null propagation operator, now u can do T result = method?.Invoke(); instead

I want to write my own function in JavaScript which takes a callback method as a parameter and executes it after the completion, I don't know how to invoke a method in my method which is passed as an argument. Like Reflection. example code function myfunction(param1, callbackfunction) { //do processing here //how to invoke callbackfunction at this point? } //this is the function call to myfunction myfunction("hello", function(){ //call back method implementation here }); You can just call it as a normal function: function myfunction(param1, callbackfunction) { //do processing here

I am only somewhat familiar with multi-threading in that I've read about it but have never used it in practice. I have a project that uses a third party library that shares the status of an input device by raising events. The problem is, the way the library is written these events are raised from a different thread. My application does not need to be multi-threaded and I've run into a lot of classic threading issues (UI controls complaining about being interacted with from a different thread, collections that get modified as one piece of code is iterating over it, etc.). I just want the 3rd

I have a calculating thread function which invokes message function from other thread using Invoke and I want that calculating thread to get value(of valuetype, like integer) from that message function. How can I do this? The problem is that I still get old value of x variable after Invoke(...) and I expect value of 15 delegate void mes_del(object param); void MyThreadFunc() { ... int x = 5; object [] parms = new object []{x}; Invoke(new mes_del(MessageFunc), (object)parms); ... } void MessageFunc(object result) { int res = 15; (result as object[])[0] = res; } I tried some approaches like

Could anyone help me i have a problem I'm trying to get this code to work in the background via threadpool but i cannot seem to get it to work i keep getting this error: Cross-thread operation not valid: Control 'ListBox3' accessed from a thread other than the thread it was created on. Here is the code i am using: private void DoWork(object o) { var list = ListBox3; var request = createRequest(TxtServer.Text, WebRequestMethods.Ftp.ListDirectory); using (var response = (FtpWebResponse)request.GetResponse()) { using (var stream = response.GetResponseStream()) { using (var reader = new

I have a domain object, that for the purposes of this question I will call Person with the following private variables: String name int age Each of these have getters and setters. Now I also have a Map<String, String> with the following entries: name, phil age, 35 I would like to populate a list of all setter methods within the class Person and then looping through this list and invoking each method using the values from the map. Is this even possible as I cannot see any examples close to this on the net. Examples are very much appreciated. Sure it's possible! You can get all methods that

I'm new to the world of threading, but a few aspects of an app I'm working on require me to use a BackgroundWorker control to prevent the UI freezing up while it's doing some file operations. What I'm trying to do is update a couple of form labels from within the BackgroundWorker. Having never worked with this before I very quickly discovered that I can't access controls that weren't created within the same thread, so after a bit of research I've implemented the following code that seems to make everything work: Private Delegate Sub DelegateUpdateStatus(ByVal statusText As String, ByRef

I currently trying to write a component where some parts of it should run on the UI thread (explanation would be to long). So the easiest way would be to pass a control to it, and use InvokeRequired/Invoke on it. But I don't think that it is a good design to pass a control reference to a "data/background"-component, so I'm searching for a way to run code on the UI thread without the need of having a control available. Something like Application.Dispatcher.Invoke in WPF... any ideas, thx Martin Judah Gabriel Himango There's a better, more abstract way to do this that works on both WinForms and