Question

我想在我的iOS应用中使用C＃Ping Class来检查网络连接。但我一直收到这个错误：InvalidOperationException，我正在使用Xamarin.ios，任何人都可以帮助我，谢谢！这是我的代码：

public override void ViewDidLoad ()
    {
        base.ViewDidLoad ();
        var resultScreen = myScreen; // the results monitor
        IPAddress myIp; // the IP address

        IPAddress.TryParse(myField.Text, out myIp); // copying address from the UITextField to myIp

        pingButton.TouchUpInside += (object sender, EventArgs e) => {
            Ping pingSender = new Ping();
            PingOptions options = new PingOptions();
            options.DontFragment = true;
            string data = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
            byte[] buffer = Encoding.ASCII.GetBytes(data);
            int timeout = 120;
            var reply = pingSender.Send(myIp.toString(), timeout, buffer,options); //the problem is here

            if (reply.Status == IPStatus.Success) {

                resultScreen.Text = reply.Address.ToString();
            }



        };
    }

例外细节是：

System.InvalidOperationException：由于对象的当前状态，操作无效。在/ Users / builder / data / lanes /中的System.Net.NetworkInformation.Ping.Send（System.Net.IPAddress地址，Int32超时，System.Byte []缓冲区，System.Net.NetworkInformation.PingOptions选项）[0x00051] 2922 / 7b89851d /源极/ maccore / _build /库/框架/ Xamarin.iOS.framework /版本/ GIT中/ SRC /单声道/ MCS /类/系统/ System.Net.NetworkInformation / Ping.cs：227 在/ Users / builder / data / lanes / 2922 /中的System.Net.NetworkInformation.Ping.Send（System.String hostNameOrAddress，Int32 timeout，System.Byte [] buffer，System.Net.NetworkInformation.PingOptions options）[0x00007] 7b89851d /源极/ maccore / _build /库/框架/ Xamarin.iOS.framework /版本/ GIT中/ SRC /单声道/ MCS /类/系统/ System.Net.NetworkInformation / Ping.cs：203 at mytest.viewController2 + c__AnonStorey0。＆lt;＆gt; m__1（System.Object sender，System.EventArgs e）[0x00056] /Users/Aminzz/Projects/mytest/mytest/viewController2.cs:44 在/Users/builder/data/lanes/2922/7b89851d/source/maccore/src/UIKit/UIControl.cs:38中的UIKit.UIControlEventProxy.Activated（）[0x00007] at at（wrapper managed-to-native）UIKit.UIApplication：UIApplicationMain（int，string []，intptr，intptr）在UIKit.UIApplication.Main（System.String [] args，IntPtr principal，IntPtr delegate）[0x00005] in /Users/builder/data/lanes/2922/7b89851d/source/maccore/src/UIKit/UIApplication.cs:79 在/ Users / builder / data / lanes / 2922 / 7b89851d / source / maccore / src / UIKit / UIApplication中的UIKit.UIApplication.Main（System.String [] args，System.String principalClassName，System.String delegateClassName）[0x0001c]的.cs：62 at mytest.Application.Main（System.String [] args）[0x00008] in /Users/Aminzz/Projects/mytest/mytest/Main.cs:12

InvalidOperationException，当我使用C＃Ping Class检查互联网连接时

0 个答案: