I'm trying to build something like the C# type initalizer dynamically: MyClass class = new MyClass { MyStringProperty= inputString }; I want to build a generic method that reflects over a given type once and returns a delegate which creates a new instance of the class and populates it based on the input parameter. The method signature...
Why is it necessary to make a function STATIC while using delegates in C# ? class Program { delegate int Fun (int a, int b); static void Main(string[] args) { Fun F1 = new Fun(Add); int Res= F1(2,3); Console.WriteLine(Res); } **static public int Add(int a, int b)** { int result; ...
I have a subclassed UIViewController that's acting as an ABPeoplePicker Navigation Controller Delegate. This view controller calls this ABPeoplePicker in a few different situations and the problem I'm having is figuring out which situation I'm responding to in - (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController...
Hey, I noticed that when I do this : [myParser setDelegate:self]; it works :D (even if I didn't add the code in the header file ... you know, the <delegateStuff, delegateOtherStuff> in the interface declaration) When are you supposed to modify the header file to make your delegate work ? Is the setDelegate method enough to ma...
I'm looking to fire an event each time a property within my class is SET. I'd like to be able to trigger this same event whenever one of my properties are set. I have (around 12 of them) I.e. public class MyClass { private int _myHeight; private int _myWidth; public int myHeight { get { return myHeight; } set { myHei...
Consider Action _captureAction; private void TestSimpleCapturedAction() { Action action = new Action(delegate { }); Action printAction = () => Console.WriteLine("Printing..."); action += printAction; CaptureActionFromParam(action); action -= printAction; _captureAction(); //p...
I'm trying to use the MVVM pattern in my Silverlight 3 application and am having problems getting binding to a command property of a view model working. First off, I'm trying to add an attached property called ClickCommand, like this: public static class Command { public static readonly DependencyProperty ClickCommandProperty = ...
Hi! Is it possible to use one delegate for several methods with different parameters somehow? I use reflection to get all the methods in a class, and I want to assign each of them a delegate and save that delegate in a dictionary with an enum as the key. This if for a remote procedure call implementation I'm working on so the enum is a...
Some strange behavior with the C# 4.0 co- and contravariance support: using System; class Program { static void Foo(object x) { } static void Main() { Action<string> action = _ => { }; // C# 3.5 supports static co- and contravariant method groups // conversions to delegates types, so this is perfectly legal: action...
Hi, I'm trying to get the following simple Delegate example working. According to a book I've taken it from it should be ok, but I get a Method name expected error. namespace TestConsoleApp { class Program { private delegate string D(); static void Main(string[] args) { int x = 1; ...
Hi guys I have a UITableView with 15 cells, each with a separate text box in it. I have implemented UITextViewDelegate and I am able to received changed textview data using textViewDidChange (etc). But I have one big problem still, how do I know WHICH textview sent this, (i.e. in which cell was the textview altered?) Its interesting to...
I am writing a Class Library that will be used by other applications. I am writing it in C#.NET. I am having a problem with triggering events across classes. Here is what I need to do... public class ClassLibrary { public event EventHandler DeviceAttached; public ClassLibrary() { // do some stuff OtherClass....
I am writing a Class Library that will be used by other applications. I am writing it in C#.NET. I am having a problem with triggering events across classes. Here is what I need to do... public class ClassLibrary { public event EventHandler DeviceAttached; public ClassLibrary() { // do some stuff OtherClass....
I'm stuck on converting this C# code to VB: AsyncHelpers.Async.Do(delegate { WriteStuff("additional stuff..."); }); I was thinking it would be something like AsyncHelpers.Async.Do(Function() WriteStuff("additional stuff...") but I get the error "Expression does not produce a value". Can someone please give me the appropriate VB.Ne...
I've put together a small code-sample below (Currently in C# 3.5 but would also like to know if the answer is any different in C# 4.0) I have three simple delegates, and three simple functions ... No problem here, everything compiles as expected, and will not compile if I accidentally try to link delegate A with Method B etc (wrong numb...
What would be the best way to do multithreading or asynchronous task in the following situation in C#? The simplified situation: A http request needs to make 5 or more web service calls. Upon completion each web service call will receive and return a string list as a result. The caller (of 5 web service calls) need to merg...
I've got an IList<Delegate> that contains some Func<bool>s and some Predicate<T>s, where T varies. I later need to sort out which of these items are Predicate<T>s, but don't want to close the door to adding other Delegate types to the list later, so I do not want to do this by identifying objects by !(current_delegate is Func<bool>). Th...
Action doesnt seem to support params string[] as a param so i wrote delegate void WriteFn(string s, params string[] ls); i have this function void blah(WriteFn Write, string fmt, params string[] a) Now i would like to write an function but i cant seem to figure the syntax out. It something like { var sw = ... blah(new Writ...
I find myself doing the following a lot, and i don't know if there is any side effects or not but consider the following in a WinForms C# app. (please excuse any errors as i am typing the code in, not copy pasting anything) int a = 1; int b = 2; int c = 3; this.Invoke((MethodInvoker)delegate() { int lol = a + b + c; }); Is there ...
I'm using Ninject 1.0 and would like to be able to inject lazy initialisation delegates into constructors. So, given the generic delegate definition: public delegate T LazyGet<T>(); I'd simply like to bind this to IKernel.Get() so that I can pass a lazy getter into constructors, e.g. public class Foo { readonly LazyGet<Bar> getBa...