I still don't quite understand what a closure is so I posted these two examples and I want to know whether these examples are both closures or not? Example A: List<DirectoryInfo> subFolders = new List<DirectoryInfo>(); Action<string> FilterSubFoldersStartA = s => subFolders. AddRange((new DirectoryInfo(s)).GetDirectories(). Where(d => d.Name.StartsW
我仍然不太明白什么是闭包 ，所以我发布了这两个例子，我想知道这些例子是否都是闭包？ 示例A： List<DirectoryInfo> subFolders = new List<DirectoryInfo>(); Action<string> FilterSubFoldersStartA = s => subFolders. AddRange((new DirectoryInfo(s)).GetDirectories(). Where(d => d.Name.StartsWith("A"))); FilterSubFoldersStartA(@"c:tempa"); FilterSubFoldersStartA(@
I have a view that returns a pdf (using iTextSharp) with multiple pages, but now I have to change it so that each page is a separate pdf (with it's own unique title) and return a zip file. My original code looks like this: public FileStreamResult DownloadPDF() { MemoryStream workStream = new MemoryStream(); Document document = new Document(); PdfWriter.GetInstance(document, wor
我有一个观点，返回一个PDF（使用iTextSharp）与多个页面，但现在我必须改变它，使每个页面是一个单独的PDF（具有它自己的唯一标题），并返回一个zip文件。 我的原始代码如下所示： public FileStreamResult DownloadPDF() { MemoryStream workStream = new MemoryStream(); Document document = new Document(); PdfWriter.GetInstance(document, workStream).CloseStream = false; document.Open(); //
Within C# is it possible to create a new function on the fly to define a variable? I know that string getResult() { if (a) return "a"; return "b"; } String result = getResult(); is possible, but I'm looking for something like String result = new string getResult() { if (a) return "a"; return "b"; } Is this possible? If so, would someone demonstrate? ED
在C＃中可以创建一个新的函数来定义一个变量？ 我知道 string getResult() { if (a) return "a"; return "b"; } String result = getResult(); 是可能的，但我正在寻找类似的东西 String result = new string getResult() { if (a) return "a"; return "b"; } 这可能吗？ 如果是这样，有人会证明吗？ 编辑它是可能的 编辑：最终 - 解决方案 这是我一起野蛮攻击的最终结果 Func<
Recently I faced such question: What numbers will be printed considering the following code: class Program { static void Main(string[] args) { int[] numbers = { 1, 3, 5, 7, 9 }; int threshold = 6; var query = from value in numbers where value >= threshold select value; threshold = 3; var result = query.ToList(); result.ForEach(Console.
最近我遇到了这样一个问题： What numbers will be printed considering the following code: class Program { static void Main(string[] args) { int[] numbers = { 1, 3, 5, 7, 9 }; int threshold = 6; var query = from value in numbers where value >= threshold select value; threshold = 3; var result = query.ToList(); result.ForEach(Console.Write
In the two following snippets, is the first one safe or must you do the second one? By safe I mean is each thread guaranteed to call the method on the Foo from the same loop iteration in which the thread was created? Or must you copy the reference to a new variable "local" to each iteration of the loop? var threads = new List<Thread>(); foreach (Foo f in ListOfFoo) {
在下面的两个片段中，第一个是安全还是第二个？ 我的意思是每个线程都保证从创建线程的同一循环迭代中调用Foo上的方法？ 或者你必须将引用复制到一个新的变量“local”到循环的每个迭代中？ var threads = new List<Thread>(); foreach (Foo f in ListOfFoo) { Thread thread = new Thread(() => f.DoSomething()); threads.Add(thread); thread.Start(); } - var threads = new List<Threa
Duplicate Closures in .NET What are closures in C#? A closure in C# takes the form of an in-line delegate/anonymous method. A closure is attached to its parent method meaning that variables defined in parent's method body can be referenced from within the anonymous method. There is a great Blog Post here about it. Example public Person FindById(int id) { return this.Find(delega
重复 .NET中的闭包 什么是C＃中的闭包？ C＃中的闭包采用内联委托/匿名方法的形式。 闭包附加到它的父方法，这意味着在父方法体中定义的变量可以从匿名方法中引用。 这里有一篇很棒的博客文章。 例 public Person FindById(int id) { return this.Find(delegate(Person p) { return (p.Id == id); }); } 你也可以看看Martin Fowler或Jon Skeet的博客。 我相信你将能够从其中至少一个人那里得到
If i have WinForm,corresponding to that WinForm ,there is a Business Logic class say Class Server. class Server does some computation based on the values entered in form controls and needs to pass that information to another class say class Client. The solution i did is ,I used Mediator Pattern. class Server { Mediator m = new Mediator(); m.IValue=txtValue.text; Client c =new Client(m)
如果我有与WinForm相对应的WinForm，则有一个业务逻辑类称为类服务器。 class Server根据表单控件中输入的值进行一些计算，并且需要将该信息传递给另一个类，如类Client。 我所做的解决方案是，我使用了Mediator Pattern。 class Server { Mediator m = new Mediator(); m.IValue=txtValue.text; Client c =new Client(m); } class Mediator { private int iValue public int IValue{get,set};
I have my main shared view (_Layout) with this: <div class="slide-out-div"> <a class="handle" href="http://link-for-non-js-users">Content</a> @{Html.RenderAction("Feedback", "Home");} </div> It is a slide panel (works, nothing to worry about) that contains a form. (Feedback.cshtml) That controller/action gets the correct view but when I do the submit, the whole
我有我的主要共享视图（_Layout）： <div class="slide-out-div"> <a class="handle" href="http://link-for-non-js-users">Content</a> @{Html.RenderAction("Feedback", "Home");} </div> 这是一个包含表单的滑动面板（作品，无需担心）。 （Feedback.cshtml）该控制器/动作得到正确的视图，但当我做提交时，整个视图被更新，我只想让“RenderAction”更新为另一个视图“谢谢” 我的表单（Fe
I've been building an ASP.NET MVC 3 web application for about 11 months now, and I have some content based components that I'd like to separate from the actual HTML views and move to more of a CMS system. This will allow the communications people in my company handle that portion of the content without requiring the web app to be redeployed. I'm not looking for a full CMS system.
我一直在构建ASP.NET MVC 3 Web应用程序大约11个月，并且我有一些基于内容的组件，我想从实际的HTML视图中分离出来，并转移到更多的CMS系统。 这将允许我公司的通信人员处理这部分内容，而不需要重新部署Web应用程序。 我不是在寻找一个完整的CMS系统。 我在网络应用中有特定的地方，我希望能够包括基于CMS的内容，并且我希望能够在CMS上托管一个博客。 有没有人见过类似这样的事情？ 我想你应该检查乌节。 它是基于ASP
I'm going to lay out the code to explain the whole situation then pose the description of the problem: In my View Model I have a boolean property to track whether the user has accepted terms: [MustBeTrue(ErrorMessageResourceType = typeof(ErrorMessages), ErrorMessageResourceName = "MustAccept")] public bool HasAuthorizedBanking { get; set; } As you can see I've created a custom valid
我将阐述代码来解释整个情况，然后提出问题的描述： 在我的视图模型中，我有一个布尔属性来跟踪用户是否接受了术语： [MustBeTrue(ErrorMessageResourceType = typeof(ErrorMessages), ErrorMessageResourceName = "MustAccept")] public bool HasAuthorizedBanking { get; set; } 正如你所看到的，我已经创建了一个自定义验证属性来处理这个名为MustBeTrue来处理复选框，因为[Required]当前不适用于MVC 3中复选框的客户端