Tcp/ip send/receive program seeshop program error / TCP/ip 송수신프로그램 씨샾프로그램 오류

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private void btnStart_Click(object sender, EventArgs e)
        {
            txtStatus.Text += "Server starting...";
            System.Net.IPAddress ip = new System.Net.IPAddress(long.Parse(txtHost.Text));
            server.Start(ip, Convert.ToInt32(txtPort.Text));
        }

Quote:
In the IpAddress part, this part is long.Parse(txtHost.Text)

IpAddress 부분에서 long.Parse(txtHost.Text) 이부분이

System.FormatException: 'Input string was not in a correct format.'

Quote:
an error occurs
txtHost is the text with the IP address, but the problem is not solved

오류발생합니다
txtHost 가 ip 주소를 적은 텍스트인데 문제해결이안됩니다

What I have tried:

Quote:
It seems to be a type problem, but I don't know how to change the code.
If anyone knows, please share information

타입형 문제인것 같은데 코드를바꿔야하는 방법을 모르겠습니다.
알고 계시는 분은 정보공유좀 부탁드리겠습니다

Posted 30-Aug-22 19:26pm

longlong2

Updated 30-Aug-22 19:37pm

OriginalGriff

v2

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OriginalGriff · Accepted Answer · 2022-08-30T19:37:00

This is an English language site, and we can only accept and answer questions in that language.
I have run this through Google Translate to produce a probably-good version, but you should check it and make sure it does say what you are actually asking.

Teh error is simple: the text in your text box txtHost cannot be interpreted as a long value: it contains characters other than the digits '0' to '9'.

That can't be "fixed" as it's an input data problem, and we have no access to that. But ... at a guess, it's an IP address like "192.168.0.1" which can;t be read as a long.

Start with the debugger, and find out exactly what the TextBox contains, then look for a solution from there. I'd guess that you want to use IPAddress.Parse Method (System.Net) | Microsoft Docs[^] rather than constructing a new IPAddress instance - but without access to you data, we can't be sure.

Google translate:
이것은 영어 사이트이며 해당 언어로만 질문을 수락하고 답변할 수 있습니다.
아마도 좋은 버전을 생성하기 위해 Google 번역을 통해 이것을 실행했지만, 당신은 그것을 확인하고 당신이 실제로 묻는 것을 말하는지 확인해야 합니다.

오류는 간단합니다. 텍스트 상자 txtHost의 텍스트는 long 값으로 해석될 수 없습니다. 여기에는 '0'에서 '9'까지의 숫자가 아닌 다른 문자가 포함되어 있습니다.

그것은 입력 데이터 문제이기 때문에 "고칠" 수 없으며 우리는 그것에 접근할 수 없습니다. 하지만 ... 추측컨데 "192.168.0.1"과 같이 길게 읽을 수 없는 IP 주소입니다.

디버거로 시작하여 TextBox에 포함된 내용을 정확히 찾은 다음 거기에서 솔루션을 찾으십시오. 나는 당신이 새로운 IPAddress 인스턴스를 생성하는 것보다 사용하기를 원할 것이라고 추측합니다. 그러나 당신의 데이터에 접근하지 않는다면 우리는 확신할 수 없습니다.