更新时间:2022-03-11 07:44:50
您可以分两步完成-使用基类await
进行任务,然后使用反射或dynamic
收获结果:
You can do it in two steps - await
the task using the base class, then harvest the result using reflection or dynamic
:
using(var context = new DbContext()) {
// Get the task
Task task = (Task)typeof(MyContextExtensions).GetMethod(methodName).Invoke(null, context);
// Make sure it runs to completion
await task.ConfigureAwait(false);
// Harvest the result
return (object)((dynamic)task).Result;
}
这是一个完整的运行示例,将通过反射调用Task
的上述技术置于上下文中:
Here is a complete running example that puts in context the above technique of calling Task
through reflection:
class MainClass {
public static void Main(string[] args) {
var t1 = Task.Run(async () => Console.WriteLine(await Bar("Foo1")));
var t2 = Task.Run(async () => Console.WriteLine(await Bar("Foo2")));
Task.WaitAll(t1, t2);
}
public static async Task<object> Bar(string name) {
Task t = (Task)typeof(MainClass).GetMethod(name).Invoke(null, new object[] { "bar" });
await t.ConfigureAwait(false);
return (object)((dynamic)t).Result;
}
public static Task<string> Foo1(string s) {
return Task.FromResult("hello");
}
public static Task<bool> Foo2(string s) {
return Task.FromResult(true);
}
}