ASP.NET:是否可以在Global.asax中调用异步任务? [英] ASP.NET: Is it possible to call async Task in Global.asax?
问题描述
我需要在Global.asax中的数据库上调用一些异步操作. 例如在Application_AuthenticateRequest中,我需要针对数据库对用户进行身份验证 异步任务有可能吗?
I need to call some async operations on my DB in Global.asax. for example in Application_AuthenticateRequest I need to Authenticate user against DB Is it possible with async Tasks?
推荐答案
现在有一种更简便的方法:
There's an easier way to do this now:
public MvcApplication()
{
var wrapper = new EventHandlerTaskAsyncHelper(DoAsyncWork);
this.AddOnAuthenticateRequestAsync(wrapper.BeginEventHandler, wrapper.EndEventHandler);
}
private async Task DoAsyncWork(object sender, EventArgs e)
{
var app = (HttpApplication)sender;
var ctx = app.Context;
...
await doSomethingAsync();
}
使用这种方法,您可以使用async关键字定义一个方法,并使用'EventHandlerTaskAsyncHelper'类包装该方法以生成BeginEventHandler和EndEventHandler方法,以传递给AddOnAuthenticateRequestAsync调用.
With this approach, you define a method using the async keyword and wrap that method using the 'EventHandlerTaskAsyncHelper' class to generate BeginEventHandler and EndEventHandler methods to pass into the AddOnAuthenticateRequestAsync call.
这篇关于ASP.NET:是否可以在Global.asax中调用异步任务?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!