blocks|key|688664|text|我建议您结合使用IndexOf和Mid。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|688665|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/k8b1470s%2528v=vs.110%2529.aspx|1|http://msdn.microsoft.com/en-us/library/8kyd8789%2528v=vs.110%2529.aspx^0|8|7|0|G|3|1|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]|$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]]]

I would recommend using a combination of <a href="http://msdn.microsoft.com/en-us/library/k8b1470s%28v=vs.110%29.aspx" rel="nofollow">IndexOf</a> and <a href="http://msdn.microsoft.com/en-us/library/8kyd8789%28v=vs.110%29.aspx" rel="nofollow">Mid</a>.

blocks|key|4471794|text|我会使用HtmlAgilityPack来解析html，但也许这种简单的方法就足够了：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4471795|如果规则是：“中最后一个单词的字符串是什么...+"：|4471796|Dim+myString+=+"abcdefgh+qwertzuiop+thepartineedtocutabcdefght+mnbvcxy"
Dim+result+As+String+=+Nothing
Dim+bTokenStart+=+myString.IndexOf("",+StringComparison.OrdinalIgnoreCase)
If+bTokenStart+>=+0+Then
++++bTokenStart+%2B=+"".Length
++++Dim+bTokenEnd+=+myString.IndexOf("",+bTokenStart,+StringComparison.OrdinalIgnoreCase)
++++If+bTokenEnd+>=+0+Then
++++++++Dim+bToken+=+myString.Substring(bTokenStart,+bTokenEnd+-+bTokenStart)
++++++++result+=+bToken.Split({"+"},+StringSplitOptions.RemoveEmptyEntries).Last()++'+thepartineedtocut
++++End+If
End+If|code-block|syntax|javascript|4471797|entityMap|0|LINK|mutability|MUTABLE|url|http://htmlagilitypack.codeplex.com/^0|4|F|4|F|0|0|7|3|S|4|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@$9|X|A|Y|1|Z]]|E|$]]|$1|F|3|G|5|6|7|10|8|@$9|11|A|12|B|C]|$9|13|A|14|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|15|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

I would use <a href="http://htmlagilitypack.codeplex.com/" rel="nofollow"><code>HtmlAgilityPack</code></a> to parse html, but maybe this naive approach is sufficient:

If the rule is: "what is the string that is the last word in <code>&lt;b&gt;</code> ... <code>&lt;/b&gt;</code>":

<pre><code>Dim myString = "&lt;b&gt;abcdefgh qwertzuiop thepartineedtocut&lt;/b&gt;abcdefght mnbvcxy"
Dim result As String = Nothing
Dim bTokenStart = myString.IndexOf("&lt;b&gt;", StringComparison.OrdinalIgnoreCase)
If bTokenStart &gt;= 0 Then
 bTokenStart += "&lt;b&gt;".Length
 Dim bTokenEnd = myString.IndexOf("&lt;/b&gt;", bTokenStart, StringComparison.OrdinalIgnoreCase)
 If bTokenEnd &gt;= 0 Then
 Dim bToken = myString.Substring(bTokenStart, bTokenEnd - bTokenStart)
 result = bToken.Split({" "}, StringSplitOptions.RemoveEmptyEntries).Last() ' thepartineedtocut
 End If
End If
</code></pre>

blocks|key|4471843|text|您可以使用正则表达式：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4471844|Dim+input+As+String+=+"abcdefgh+qwertzuiop+thepartineedtocutabcdefght+mnbvcxy"
Dim+re+As+New+System.Text.RegularExpressions.Regex("(\w%2B)")
Console.WriteLine(re.Match(input).Groups(1).Value)+'outputs:+thepartineedtocut|code-block|syntax|javascript|4471845|这里的规则是:在结束标记之前找到一个单词。|offset|length|style|CODE|4471846|entityMap^0|0|0|A|4|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]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

You can use regular expressions:

<pre><code>Dim input As String = "&lt;b&gt;abcdefgh qwertzuiop thepartineedtocut&lt;/b&gt;abcdefght mnbvcxy"
Dim re As New System.Text.RegularExpressions.Regex("(\w+)&lt;/b&gt;")
Console.WriteLine(re.Match(input).Groups(1).Value) 'outputs: thepartineedtocut
</code></pre>

The rule here is : find a word immediately before the closing <code>&lt;/b&gt;</code> tag.

blocks|key|4471852|text|如果文本从未更改，则：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4471853|Dim+input+As+String+=+"abcdefgh+qwertzuiop+thepartineedtocutabcdefght+mnbvcxy"

input+=+input.replace("abcdefgh+qwertzuiop+","").replace("abcdefght+mnbvcxy","")|code-block|syntax|javascript|4471854|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|$]]

If the text never changes then:

<pre><code>Dim input As String = "&lt;b&gt;abcdefgh qwertzuiop thepartineedtocut&lt;/b&gt;abcdefght mnbvcxy"

input = input.replace("&lt;b&gt;abcdefgh qwertzuiop ","").replace("&lt;/b&gt;abcdefght mnbvcxy","")
</code></pre>

I'm actually working on program where I want to manually copy and paste a webpage source code and the program is supposed to find a certain part of the source code and cut it out from the rest of the string.

I can't find the way how to cut it out from the rest of the text.

So I have a string something like this:

<pre><code>"&lt;b&gt;abcdefgh qwertzuiop thepartineedtocut&lt;/b&gt;abcdefght mnbvcxy"
</code></pre>

And I need to get just:

<pre><code>"thepartineedtocut"
</code></pre>

The problem is that it will not always be the same word but the words around it will not change. I hope you understand me.
Thanks.
Have a nice day.

Cutting a part of string in vb.net

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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我实际上是在做一个程序，我想手动复制和粘贴网页的源代码，程序应该找到源代码的某一部分，并将其从字符串的其余部分中剪切出来。我找不到如何把它从剩下的文本中去掉的方法。所以我有一个类似如下的字符串："abcdefgh qwertzuiop thepartineedtocutabcdefght mnbvcxy"...

问在vb.net中剪切字符串的一部分
EN

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问在vb.net中剪切字符串的一部分EN