It’s been awesome seeing the level of interest developers have had for the Async CTP and how much usage it’s getting. Of course, with any new technology there are bound to be some hiccups. One issue I’ve seen arise now multiple times is developers…
传送门:异步编程系列目录…… 环境:VS2012(尽管System.Threading.Tasks在.net4.0就引入,在.net4.5中为其增加了更丰富的API及性能提升,另外关键字”async”和”await”是在C#5.0引入的.vs2010打 Visual Studio Async CTP for VS2010补丁可以引入关键字”async”和”await”的支持,但是得不到.net4.5新增API的支持) (CTP:Community Test Preview 社区测试试用版,就是一…
From time to time, I receive questions from developers which highlight either a need for more information about the new “async” and “await” keywords in C# and Visual Basic. I’ve been cataloguing these questions, and I thought I’d take this opportunit…
http://blog.stephencleary.com/2012/07/dont-block-on-async-code.html This is a problem that is brought up repeatedly on the forums and Stack Overflow. I think it’s the most-asked question by async newcomers once they’ve learned the basics. UI Example…
In a previous post Should I expose asynchronous wrappers for synchronous methods?, I discussed "async over sync," the notion of using synchronous functionality asynchronously and the benefits that doing so may or may not yield. The other directi…
今天调试requet.GetRequestStreamAsync异步方法出现不返回的问题,可能是死锁了.看到老外一篇文章解释了异步方法死锁的问题,懒的翻译,直接搬过来了. http://blog.stephencleary.com/2012/07/dont-block-on-async-code.html This is a problem that is brought up repeatedly on the forums and Stack Overflow. I think it’s t…
http://blog.stephencleary.com/2012/07/dont-block-on-async-code.html This is a problem that is brought up repeatedly on the forums and Stack Overflow. I think it’s the most-asked question by async newcomers once they’ve learned the basics. UI Example…
平时在使用C# 5.0中的await and async关键字的时候总是没注意,直到今天在调试一个ASP.NET项目时,发现在调用一个声明为async的方法后,程序老是莫名其妙的被卡住,就算声明为async的方法中的Task任务执行完毕后,外部方法的await调用还是阻塞着,后来查到了下面这篇文章,才恍然大悟原来await and async模式使用不当很容易造成程序死锁,下面这篇文章通过一个Winform示例和一个Asp.net示例介绍了await and async模式是如何造成程序死锁的,…
Most people have already heard about the new “async” and “await” functionality coming in Visual Studio 11. This is Yet Another Introductory Post. First, the punchline: Async will fundamentally change the way most code is written. Yup, I believe async…
Windows App支持将UI界面进行打印的功能,这与浏览器中的打印网页的用途相近,其好处就是“所见即所得”,直接把界面上呈现的内容打印下来,比重新创建打印图像方便得多. 要在通用App中实现打印,主要依靠以下几个类型: PrintManager:位于Windows.Graphics.Printing命名空间,主要负责显示打印对话框,设置打印源等操作.在使用时,首先调用GetForCurrentView静态方法得到一个PrintManager实例:随后处理它的PrintTaskRequeste…