C＃dns没有提出这样的主机是众所周知的 [英] C# dns raise no such host is known

问题描述

Hello ,

i have to try to connect one ip address in my desktop application with the 

dns.beginhostentry but it gives error "no such host is known" 

while i am using with alias its works fine for the same ip 

address. 

example :

string ip_address ="123.456.789.012" 
string alias = "mymachine" 'this is alias of above ip address.

DNS.BeginGetHostEntry(ip_address,abcd,this); this statement does 

not works. it show the error that "no such host is known".

while

DNS.BeginGetHostEntry(alias,abcd,this);

this statement does works no issues at all.



please solve this query.

thanks

我尝试了什么：

What I have tried:

Note : i dont want to do host entry into the host file of the any 

particular pc. because i want to fix the ip address at all. 

推荐答案

如果您阅读 BeginGetHostEntry 的文档，则IP地址参数为a System.Net.IPAddress ，与字符串表示形式不同。将您的号码转换为 IPAddress ，然后重试。

If you read the documentation for BeginGetHostEntry, the IP address parameter is a System.Net.IPAddress, which is not the same as a string representation. Convert your numbers to an IPAddress and try again.

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