blocks|key|776700|text|在C#中|type|unstyled|depth|inlineStyleRanges|entityRanges|data|776701|string+url+=+"www.google.com";
string[]+split_strings+=+url.Split('.');
Console.WriteLine(split_strings[1]);+|code-block|syntax|javascript|776702|从文本框中获取字符串：|776703|string+url+=+textbox_url.Text;
string[]+split_strings+=+url.Split('.');
Console.WriteLine(split_strings[1]);+|776704|但请使用try+and+catch+;)|776705|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

in C#

<pre><code>string url = "www.google.com";
string[] split_strings = url.Split('.');
Console.WriteLine(split_strings[1]); 
</code></pre>

Get String From Textbox:

<pre><code>string url = textbox_url.Text;
string[] split_strings = url.Split('.');
Console.WriteLine(split_strings[1]); 
</code></pre>

But please, use try and catch ;)

blocks|key|776752|text|我认为你的问题需要更具体一点。现在，如果您只是想要提取地址的中间部分，下面这样的代码应该可以完成任务：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|776753|var+parts+=+textbox.Text.Split(new+char[]+{'.'});
if+(parts.Length+<+3)+throw+new+InvalidOperationException("Invalid+address.");
var+middlePart+=+parts[1];|code-block|syntax|javascript|776754|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You'll need to be a bit more specific with your question I think. Now, if you're just looking to extract the middle part of the address, something like the following should do the job:

<pre><code>var parts = textbox.Text.Split(new char[] {'.'});
if (parts.Length &lt; 3) throw new InvalidOperationException("Invalid address.");
var middlePart = parts[1];
</code></pre>

blocks|key|3995497|text|string+haystack=+"www.google.com"；string+=+"google"；|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3995498|++++++++string+myWord+=+GetWordFromString(haystack,+needle);

++++++++private+string+GetWordFromString(string+haystack,+string+needle)
++++++++{
+++++++++++if+(haystack.ToLower().Contains(needle))
+++++++++++{
+++++++++++++++return+needle;
+++++++++++}
++++++++}|code-block|syntax|javascript|3995499|我重读了这篇带有评论的帖子，我可以看到你可能不知道你要提取的是什么词……我认为第一个答案就是你所期待的那个。|3995500|如果你有特殊的需求，也可以使用正则表达式从url中提取域名。如下所示：|3995501|++++public+static+string+ExtractDomainName(string+Url)
++++{
++++++++return+System.Text.RegularExpressions.Regex.Replace(
++++++++Url,
++++++++@"%5E([a-zA-Z]%2B:\/\/)?([%5E\/]%2B)\/.*?$",
++++++++"$2"
++++++++);
++++}+|3995502|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|S|8|@]|9|@]|A|$E|F]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

string haystack= "www.google.com";
 string needle = "google";

<pre><code> string myWord = GetWordFromString(haystack, needle);

 private string GetWordFromString(string haystack, string needle)
 {
 if (haystack.ToLower().Contains(needle))
 {
 return needle;
 }
 }
</code></pre>

I re-read the post with comments I can see that you probably don't know what word you are going to extract... I think the first answer is the one that you are looking fore.

There's also regular expressions for extracting the domainname out of a url if that is your specific need.
Something like this:

<pre><code> public static string ExtractDomainName(string Url)
 {
 return System.Text.RegularExpressions.Regex.Replace(
 Url,
 @"^([a-zA-Z]+:\/\/)?([^\/]+)\/.*?$",
 "$2"
 );
 } 
</code></pre>

blocks|key|1249070|text|这和你的需求一样具体吗？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1249071|它是否只适用于www.SOMESITE.com？|1249072|其他的tld扩展，比如.net，.org，.co.uk，.ie等等呢？那其他的子域名呢，比如www2，api，news。等等。如果域名没有子域，比如google.com，theregister.co.uk，bit.ly|1249073|如果这和你的需求一样简单，|1249074|然后|1249075|textBox.Text.Replace("www.",+"").Replace(".com",+"");|code-block|syntax|javascript|1249076|尽管我有一种感觉，你还没有仔细考虑或者完全解释你的需求。|1249077|如果这是一个更复杂的场景，您可能需要查看正则表达式。|1249078|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|X|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|Z|8|@]|9|@]|A|$M|N]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|11|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

Is that as specific as your requirement is?

does it only have to work for www.SOMESITE.com

what about other tld extensions like, .net, .org, .co.uk, .ie etc...
what about other subdomains like, www2., api., news. etc...
what about domains with no subdomain like, google.com, theregister.co.uk, bit.ly

if that's a simple as your requirement is,

then

<pre><code>textBox.Text.Replace("www.", "").Replace(".com", "");
</code></pre>

though I've a feeling you haven't thought through or fully explained your requirements.

If it is a more complex scenario, you might want to look at Regular expressions.

blocks|key|1249080|text|string+text+=+"www.+abc.org+.+h";
int+left+=+Math.Max(text.IndexOf('.'),+0),
+++right+=+Math.Min(text.LastIndexOf('.'),+text.Length+-+1);

string+result+=+text.Substring(left%2B1,+right+-+left-1).Trim();|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1249081|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>string text = "www. abc.org . h";
int left = Math.Max(text.IndexOf('.'), 0),
 right = Math.Min(text.LastIndexOf('.'), text.Length - 1);

string result = text.Substring(left+1, right - left-1).Trim();
</code></pre>

i just want to get a text from textbox that is betwen two dots for example. www. abc.org . h

how to get a text from textbox that is betwen two dots

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。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

我只想从文本框中获取一个文本，例如两个点。www。abc.org。H

问如何从文本框中获取两个点之间的文本
EN

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何从文本框中获取两个点之间的文本EN