.net-4.5

问题 I would like to fire several tasks while setting a timeout on them. The idea is to gather the results from the tasks that beat the clock, and cancel (or even just ignore) the other tasks. I tried using extension methods WithCancellation as explained here, however throwing an exception caused WhenAll to return and supply no results. Here's what I tried, but I'm opened to other directions as well (note however that I need to use await rather than Task.Run since I need the httpContext in the

问题 I am experiencing some interesting behavior with the HttpClient from the .NET Framework (4.5.1+, 4.6.1 and 4.7.2). I have proposed some changes in a project at work to not dispose of the HttpClient on each use because of the known issue with high TCP port usage, see https://aspnetmonsters.com/2016/08/2016-08-27-httpclientwrong/. I have investigated the changes to check that things were working as expected and found that we are still experiencing the same TIME_WAIT ports as before. To confirm

问题 I'm trying to implement logging functionality into my new WPF 4.5 CompositeWPF (Prism) project. This requires me to implement ILoggerFacade in my code. The interface only implements 1 method: Log(string message, Category category, Priority priority) . The ILoggerFacade interface: public interface ILoggerFacade { void Log(string message, Category category, Priority priority); } My implementation : public class Log4NetLogger : ILoggerFacade { private static readonly ILog m_Logger = LogManager

问题 All, please take the following code: Task<bool> generateStageAsyncTask = null; generateStageAsyncTask = Task.Factory.StartNew<bool>(() => { return GenerateStage(ref workbook); }, this.token, TaskCreationOptions.LongRunning, TaskScheduler.Default); // Run core asynchroniously. bool bGenerationSuccess = false; try { bGenerationSuccess = await generateStageAsyncTask; } catch (OperationCancelledException e) { // Script cancellation. result.RunSucceeded = true; result.ResultInfo = "Script

问题 I wanted to understand the dot net core support a bit more. My basic understanding was that if I wanted to run a .net app on Linux then it needs to be built .net core and targeted netcoreapp1.0 framework to guarantee this. 1) I assume the above assumption is correct? 2) When I was reading various articles online, such as this one about referencing exiting .net framework project within a .net core application (https://www.hanselman.com/blog

问题 My view is as below: <script src="@Url.Content("~/Scripts/jquery.unobtrusive-ajax.js")" type="text/javascript"></script> <script src="@Url.Content("~/Scripts/jquery.validate.js")" type="text/javascript"></script> <script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.js")" type="text/javascript"></script> @using (Ajax.BeginForm(new AjaxOptions { HttpMethod = "Get", InsertionMode = InsertionMode.Replace, UpdateTargetId = "DisplayPatients" })) { <input type="search" name="searchTerm"

问题 I'm exploring the capabilities of .NET 4.5 System.Json library but there isn't much documentation, and it's quite tricky to search for due to the popular JSON.NET library. I am wondering basically, how I'd loop through some JSON for example: { "People": { "Simon" : { Age: 25 }, "Steve" : { Age: 15 } } } I have my JSON in a string, and I want to iterate through and display the ages of everyone. So first I'd do: var jsonObject = JsonObject.Parse(myString); but then I'm at a loss of what to do

问题 I'm looking for a way to measure the cpu cycles a function call on a thread takes. Example pseudo code: void HostFunction() { var startTick = CurrentThread.CurrentTick; //does not exist ChildFunction(); var endTick = CurrentThread.CurrentTick; //does not exist var childFunctionCost = endTick - startTick; } void ChildFunction() { //Do whatever... Thread.Sleep(3000); //Do some more... } I don't want to use a Stopwatch or some other time measurement, because it would include any time that the

问题 The Top answers here: What does 'useLegacyV2RuntimeActivationPolicy' do in the .NET 4 config? and What 'additional configuration' is necessary to reference a .NET 2.0 mixed mode assembly in a .NET 4.0 project? did not help. My particular Use-case is .Net 4.5 and above for WinForms and Console apps in VS2015 , while trying to use a .net 2.0 dll Under VS2015, adding the suggested variants of this to projects config file does not help. <configuration> <startup useLegacyV2RuntimeActivationPolicy=

问题 I'm creating an application on .net framework 4.5 whenever i want to load the app config values (appSettings section) and write the changes, i don't see my changes if i refresh the section. What i am doing wrong? and how can i solve it? code private void LoadConfig() { NameValueCollection appSettings = ConfigurationManager.AppSettings; for (int i = 0; i < appSettings.Count; i++) { switch (appSettings.GetKey(i)) { case "initialCatalog": txtInitialCatalog.Text = appSettings.GetValues(i)[0];