blocks|key|1236255|text|使用System.Uri类。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1236256|+System.Uri+uri+=+new+Uri("http://stackoverflow.com/search?q=something");
+string+uriWithoutScheme+=+uri.Host.Replace("www.","")+%2B+uri.PathAndQuery;|code-block|syntax|javascript|1236257|这将给你：stackoverflow.com/search?q=something|1236258|entityMap^0|2|A|0|0|5|10|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

Use the <code>System.Uri</code> class.

<pre><code> System.Uri uri = new Uri("http://stackoverflow.com/search?q=something");
 string uriWithoutScheme = uri.Host.Replace("www.","") + uri.PathAndQuery;
</code></pre>

This will give you: <code>stackoverflow.com/search?q=something</code>

blocks|key|2490532|text|使用乌里类。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2490533|string+url+=+"http://www.testsite.com/path/file.html";
Uri+uri+=+new+Uri(url);|code-block|syntax|javascript|2490534|有不同的属性可以检索url的不同部分。|2490535|使用uri.Host获取url的www.testsite.com部分。一个小的字符串操作可以删除www.；|style|CODE|2490536|string+domain+=+uri.Host;
if+(domain.StartsWith("www."))
{
++++domain+=+domain.Substring(4);
}|2490537|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/txt7706a%2528v=vs.100%2529.aspx|1|http://msdn.microsoft.com/en-us/library/system.uri_properties%2528v=vs.100%2529.aspx^0|2|2|0|0|0|4|2|1|0|G|G|1C|4|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@$A|11|B|12|1|13]]|C|$]]|$1|D|3|E|5|F|7|14|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|15|8|@]|9|@$A|16|B|17|1|18]]|C|$]]|$1|K|3|L|5|6|7|19|8|@$A|1A|B|1B|M|N]|$A|1C|B|1D|M|N]]|9|@]|C|$]]|$1|O|3|P|5|F|7|1E|8|@]|9|@]|C|$G|H]]|$1|Q|3|-4|5|6|7|1F|8|@]|9|@]|C|$]]]|R|$S|$5|T|U|V|C|$W|X]]|Y|$5|T|U|V|C|$W|Z]]]]

Use the <a href="http://msdn.microsoft.com/en-us/library/txt7706a%28v=vs.100%29.aspx" rel="nofollow">Uri</a> class.

<pre><code>string url = "http://www.testsite.com/path/file.html";
Uri uri = new Uri(url);
</code></pre>

There are various <a href="http://msdn.microsoft.com/en-us/library/system.uri_properties%28v=vs.100%29.aspx" rel="nofollow">properties</a> do retrieve different parts of the url.

Use uri.Host to get the <code>www.testsite.com</code> portion of the url. A little string manipulation can remove the <code>www.</code>;

<pre><code>string domain = uri.Host;
if (domain.StartsWith("www."))
{
 domain = domain.Substring(4);
}
</code></pre>

blocks|key|1237450|text|public+static+string+CleanDomainName(string+url)
{
++++var+uri+=+url.Contains("http://")+?+new+Uri(url)+:+new+Uri("http://"+%2B+url);
++++var+parts+=+uri.Host.Split('.');
++++return+string.Join(".",+parts.Skip(parts.Length+-+2));
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1237451|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>public static string CleanDomainName(string url)
{
 var uri = url.Contains("http://") ? new Uri(url) : new Uri("http://" + url);
 var parts = uri.Host.Split('.');
 return string.Join(".", parts.Skip(parts.Length - 2));
}
</code></pre>

blocks|key|2490554|text|///+<summary>
///+Clears+the+sub+domains+from+a+URL.
///+</summary>
///+<param+name="url">The+URL.</param>
///+<returns>String+for+a+URL+without+any+subdomains</returns>
private+static+string+ClearUrlSubDomains(Uri+url)
{
++++var+host+=+url.Host.ToLowerInvariant();
++++if+(host.LastIndexOf('.')+!=+host.IndexOf('.'))
++++{
++++++++host+=+host.Remove(0,+host.IndexOf('.')+%2B+1);+//+Strip+out+the+subdomain+(i.e.+remove+en-gb+or+www+etc)
++++}
++++return+host;
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2490555|您可以从您的域创建一个新的Uri，因此调用它将是：|unstyled|2490556|ClearUrlSubDomains(new+Uri(domain))|2490557|这并不能解决像http://www.something.somethingelse.com这样的urls，但是可以通过使用相等的while构造来进行修改。|offset|length|2490558|entityMap|0|LINK|mutability|MUTABLE|url|http://www.something.somethingelse.com/^0|0|0|0|7|12|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|V|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$B|C]]|$1|I|3|J|5|F|7|X|8|@]|9|@$K|Y|L|Z|1|10]]|A|$]]|$1|M|3|-4|5|F|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

<pre><code>/// &lt;summary&gt;
/// Clears the sub domains from a URL.
/// &lt;/summary&gt;
/// &lt;param name="url"&gt;The URL.&lt;/param&gt;
/// &lt;returns&gt;String for a URL without any subdomains&lt;/returns&gt;
private static string ClearUrlSubDomains(Uri url)
{
 var host = url.Host.ToLowerInvariant();
 if (host.LastIndexOf('.') != host.IndexOf('.'))
 {
 host = host.Remove(0, host.IndexOf('.') + 1); // Strip out the subdomain (i.e. remove en-gb or www etc)
 }
 return host;
}
</code></pre>

You can create a new Uri from your domain so calling it will be:

<pre><code>ClearUrlSubDomains(new Uri(domain))
</code></pre>

This doesn't address urls like <a href="http://www.something.somethingelse.com" rel="nofollow">http://www.something.somethingelse.com</a> but can be modified to do so with a while construct of equivalent.

blocks|key|1236318|text|使用Regex替换字符串开头的表达式：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1236319|Regex.Replace(input,+@"%5E(?:http(?:s)?://)?(?:www(?:[0-9]%2B)?\.)?",+string.Empty,+RegexOptions.IgnoreCase);|code-block|syntax|javascript|1236320|这将取代：|1236321|开头的"http://“”(或“https://"”)后面跟着|unordered-list-item|offset|length|1236322|最终的“www”(也包括以下的ie:+www8或www23)|1236323|entityMap|0|LINK|mutability|MUTABLE|url|https://^0|0|0|0|G|9|0|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Y|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Z|8|@]|9|@]|A|$]]|$1|I|3|J|5|K|7|10|8|@]|9|@$L|11|M|12|1|13]]|A|$]]|$1|N|3|O|5|K|7|14|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|Q|$R|$5|S|T|U|A|$V|W]]]]

use Regex to replace the expressions in the beginning of the string:

<pre><code>Regex.Replace(input, @"^(?:http(?:s)?://)?(?:www(?:[0-9]+)?\.)?", string.Empty, RegexOptions.IgnoreCase);
</code></pre>

this will replace: 

<ul>
<li>an eventual "http://" in the beginning (or "https://") followed by</li>
<li>an eventual "www." (also with a number following ie: www8 or www23)</li>
</ul>

In the application I am working on, we allow user to enter a list of domain names, we expect the user to enter the domain names in any on the following formats

<ul>
<li><a href="http://www.stackoverflow.com">stackoverflow.com</a></li>
<li><a href="http://www.stackoverflow.com">www.stackoverflow.com</a></li>
<li><a href="http://www.stackoverflow.com">http://stackoverflow.com</a></li>
<li><a href="http://www.stackoverflow.com">http://www.stackoverflow.com</a></li>
</ul>

but when storing this domain names back into our databases, we want to store the domain name in the following format only

Format : stackoverflow.com

So wanted to know if there is a ready made helper that I can use to get this job done, or any suggestions to do this in an efficient manner.

<a href="http://mattgemmell.com/2008/12/08/what-have-you-tried/" rel="nofollow">What have I tried ?</a>

This is what I came up with,

<pre><code>public static string CleanDomainName(string domain)
{
 domain = domain.Trim();
 if (domain.Split('.').Count() &gt; 2)
 {
 domain = domain.Split('.')[1] + "." + domain.Split('.')[2];
 }
 return domain;
}
</code></pre>

Please help me out on this.

How to strip http:// and www. from an entered domain name using c#

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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在我正在开发的应用程序中，我们允许用户输入域名列表，我们期望用户按以下格式输入域名但是，当将此域名存储回数据库时，我们希望仅以以下格式存储域名格式: stackoverflow.com所以想知道是否有现成的帮手，我可以用来完成这项工作，或任何建议，以一种有效的方式这样做。这就是我想出来的，public static s...

问如何剥去http://和www。从输入的域名中使用c#
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