Hi, My Android Xamarin.Forms application uses a Navigation stack to display various views, I often have a list on a screen (A) that once a cell is clicked I push onto the stack a new screen (B), the user completes some form fields and then clicks a b…

发生未处理的域异常! System.ObjectDisposedException: Cannot access a disposed object. Object name: 'System.Net.Sockets.Socket'.    at System.Net.Sockets.Socket.SendAsync(SocketAsyncEventArgs e) 在进行Socket长连接时,若服务器或客户端出现异常时,另外一端对Socket对话进行操作时,程序会出现无法访问已释放的对象的问题.…

框架:abp 异常信息: An unhandled exception was thrown by the application.System.ObjectDisposedException: Cannot access a disposed object. A common cause of this error is disposing a context that was resolved from dependency injection and then later trying t…

.Net Core 2.1-Cannot access a disposed object.Object name: 'IServiceProvider' (3) I just migrated .NET Core 2.0 to .NET Core 2.1. Everything went fine, but when I try to login now I get the folowing error: $exception {System.ObjectDisposedException:…

Cannot access a disposed object in ASP.NET Core 楠木大叔     导航 常见原因 总结   对于.neter来说,在使用ASP.NET Core的过程中,大家或多或少会遇到这样的报错--"Cannot access a disposed object".出现这样的异常的原因有很多,如果它在调试的时候出现是很容易解决的,但是有些时候它在本地运行良好,等到你部署到生产环境才会表现出来.针对这个异常,请跟随我一起来分析和探究其根本原因.   在…

ASP.NET Core 部署在Centos 中 偶尔出现 One or more errors occurred. (Cannot access a disposed object.Object name: 'SocketsHttpHandler'.) 之前的写法如下: var httpclientHandler = new HttpClientHandler(); httpclientHandler.ServerCertificateCustomValidationCallback = (m…

Xamarin.Forms的View没有touch事件,只能自己实现 首先,在共享项目里面,放入这几个类,结构大概是这样的: using System; using Xamarin.Forms; namespace TouchTracking { public class TouchActionEventArgs : EventArgs { public TouchActionEventArgs(long id, TouchActionType type, Point location, boo…

While creating Xamarin.Forms applications, definitely you are going to need TapGestureRecognizer often. Implementing it in XAML many times may end up with a lot of unnecessary code. Let’s take a look at that simple clickable Image: <Image Source="…

I'm pretty desperate finding the solution for the problem stated below. I have a cross platform solution which has 4 projects, 3 OS specifics     MyApp.android,    MyApp.Winphone,    MyApp.IOSand a PCL project    MyApp.BLL inside the MyApp.BLLbll, I'…

在上一篇Xamarin开发环境及开发框架初探中,曾简单提到MvvmCross这个Xamarin下的开发框架.最近又评估了一些别的,发现老牌Mvvm框架Prism现在也支持Xamarin Forms了,可喜可贺!今天我们就来近距离尝试.比较一下,分别基于这两个框架写一个简单Android/iOS跨平台应用的感受. Prism Prism框架应该来源于微软的Microsoft patterns & practices的Prism Guidance.最初,应该被更多用于WPF开发.我对WPF了解太少,…