如何使用异步方法查找Internet连接 [英] How to find internet connection using async method

问题描述

public static void isConnected()
        {
                WebClient client = new WebClient();
                client.OpenReadCompleted += new OpenReadCompletedEventHandler(client_OpenReadCompleted);
                client.OpenReadAsync(new Uri("http://www.google.com"));
        }

static void client_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e)
        {
         e.Result();  
        }

当我在下面找到解决方案时出现错误消息



`不可调用的成员'System.Net.OpenReadCompletedEventArgs.Result'不能像方法一样使用`



请帮助我

when bulid the solution i got below error message

`Non-invocable member 'System.Net.OpenReadCompletedEventArgs.Result' cannot be used like a method`

pls help me

推荐答案

结果是属性，而不是方法。请参阅 https://msdn.microsoft.com/en- us / library / system.net.openreadcompletedeventargs_properties（v = vs.110）.aspx [ ^ ]。

Result is a property, not a method. See https://msdn.microsoft.com/en-us/library/system.net.openreadcompletedeventargs_properties(v=vs.110).aspx[^].

将代码更改为以下内容。

Change your code to below.

public static void isConnected()
        {
                WebClient client = new WebClient();
                client.OpenReadCompleted += new OpenReadCompletedEventHandler(client_OpenReadCompleted);
                client.OpenReadAsync(new Uri("http://www.google.com"));
        }

static void client_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e)
        {
            reply = (Stream)e.Result;
            s = new StreamReader (reply);
            string strResult = s.ReadToEnd ();
        }

这篇关于如何使用异步方法查找Internet连接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！