blocks|key|1455521|text|在String.Compare方法上尝试此重载。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1455522|String.Compare方法(String，String，Boolean，CultureInfo)|1455523|它根据包括cultureinfo在内的比较操作生成一个int值。页面中的示例比较了en-US和en-CZ中的"Change“。CH+en-CZ是一个单独的“字母”。|1455524|链接中的示例|1455525|using+System;
using+System.Globalization;

class+Sample+{
++++public+static+void+Main()+{
++++String+str1+=+"change";
++++String+str2+=+"dollar";
++++String+relation+=+null;

++++relation+=+symbol(+String.Compare(str1,+str2,+false,+new+CultureInfo("en-US"))+);
++++Console.WriteLine("For+en-US:+{0}+{1}+{2}",+str1,+relation,+str2);

++++relation+=+symbol(+String.Compare(str1,+str2,+false,+new+CultureInfo("cs-CZ"))+);
++++Console.WriteLine("For+cs-CZ:+{0}+{1}+{2}",+str1,+relation,+str2);
++++}

++++private+static+String+symbol(int+r)+{
++++String+s+=+"=";
++++if++++++(r+<+0)+s+=+"<";
++++else+if+(r+>+0)+s+=+">";
++++return+s;
++++}
}
/*
This+example+produces+the+following+results.
For+en-US:+change+<+dollar
For+cs-CZ:+change+>+dollar
*/|code-block|syntax|javascript|1455526|因此，对于重音语言，您需要获取区域性，然后在此基础上测试字符串。|1455527|http://msdn.microsoft.com/en-us/library/hyxc48dt.aspx|offset|length|1455528|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|0|0|0|0|1H|0|0^^$0|@$1|2|3|4|5|6|7|Z|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|10|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|11|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|12|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|13|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|14|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|15|8|@]|9|@$Q|16|R|17|1|18]]|A|$]]|$1|S|3|-4|5|6|7|19|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|P]]]]

try this overload on the String.Compare Method. 

String.Compare Method (String, String, Boolean, CultureInfo)

It produces a int value based on the compare operations including cultureinfo. the example in the page compares "Change" in en-US and en-CZ. CH in en-CZ is a single "letter".

example from the link

<pre><code>using System;
using System.Globalization;

class Sample {
 public static void Main() {
 String str1 = "change";
 String str2 = "dollar";
 String relation = null;

 relation = symbol( String.Compare(str1, str2, false, new CultureInfo("en-US")) );
 Console.WriteLine("For en-US: {0} {1} {2}", str1, relation, str2);

 relation = symbol( String.Compare(str1, str2, false, new CultureInfo("cs-CZ")) );
 Console.WriteLine("For cs-CZ: {0} {1} {2}", str1, relation, str2);
 }

 private static String symbol(int r) {
 String s = "=";
 if (r &lt; 0) s = "&lt;";
 else if (r &gt; 0) s = "&gt;";
 return s;
 }
}
/*
This example produces the following results.
For en-US: change &lt; dollar
For cs-CZ: change &gt; dollar
*/
</code></pre>

therefor for accented languages you will need to get the culture then test the strings based on that.

<a href="http://msdn.microsoft.com/en-us/library/hyxc48dt.aspx" rel="nofollow noreferrer">http://msdn.microsoft.com/en-us/library/hyxc48dt.aspx</a>

blocks|key|1670556|text|下面的方法CompareIgnoreAccents(...)处理您的示例数据。以下是我获得背景信息的文章：http://www.codeproject.com/KB/cs/EncodingAccents.aspx|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1670557|private+static+bool+CompareIgnoreAccents(string+s1,+string+s2)
{
++++return+string.Compare(
++++++++RemoveAccents(s1),+RemoveAccents(s2),+StringComparison.InvariantCultureIgnoreCase)+==+0;
}

private+static+string+RemoveAccents(string+s)
{
++++Encoding+destEncoding+=+Encoding.GetEncoding("iso-8859-8");

++++return+destEncoding.GetString(
++++++++Encoding.Convert(Encoding.UTF8,+destEncoding,+Encoding.UTF8.GetBytes(s)));
}|code-block|syntax|javascript|1670558|我认为扩展方法会更好：|1670559|public+static+string+RemoveAccents(this+string+s)
{
++++Encoding+destEncoding+=+Encoding.GetEncoding("iso-8859-8");

++++return+destEncoding.GetString(
++++++++Encoding.Convert(Encoding.UTF8,+destEncoding,+Encoding.UTF8.GetBytes(s)));
}|1670560|那么它的用法是：|1670561|if(string.Compare(s1.RemoveAccents(),+s2.RemoveAccents(),+true)+==+0)+{
+++...|1670562|entityMap|0|LINK|mutability|MUTABLE|url|http://www.codeproject.com/KB/cs/EncodingAccents.aspx^0|5|P|1H|1H|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@$9|13|A|14|1|15]]|E|$]]|$1|F|3|G|5|H|7|16|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|17|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|18|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|19|8|@]|D|@]|E|$]]|$1|Q|3|R|5|H|7|1A|8|@]|D|@]|E|$I|J]]|$1|S|3|-4|5|6|7|1B|8|@]|D|@]|E|$]]]|T|$U|$5|V|W|X|E|$Y|Z]]]]

The following method <code>CompareIgnoreAccents(...)</code> works on your example data. Here is the article where I got my background information: <a href="http://www.codeproject.com/KB/cs/EncodingAccents.aspx" rel="nofollow noreferrer">http://www.codeproject.com/KB/cs/EncodingAccents.aspx</a>

<pre><code>private static bool CompareIgnoreAccents(string s1, string s2)
{
 return string.Compare(
 RemoveAccents(s1), RemoveAccents(s2), StringComparison.InvariantCultureIgnoreCase) == 0;
}

private static string RemoveAccents(string s)
{
 Encoding destEncoding = Encoding.GetEncoding("iso-8859-8");

 return destEncoding.GetString(
 Encoding.Convert(Encoding.UTF8, destEncoding, Encoding.UTF8.GetBytes(s)));
}
</code></pre>

I think an extension method would be better:

<pre><code>public static string RemoveAccents(this string s)
{
 Encoding destEncoding = Encoding.GetEncoding("iso-8859-8");

 return destEncoding.GetString(
 Encoding.Convert(Encoding.UTF8, destEncoding, Encoding.UTF8.GetBytes(s)));
}
</code></pre>

Then the use would be this:

<pre><code>if(string.Compare(s1.RemoveAccents(), s2.RemoveAccents(), true) == 0) {
 ...
</code></pre>

blocks|key|1670614|text|如果不需要转换字符串，并且只想检查是否相等，可以使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1670615|string+s1+=+"hello";
string+s2+=+"héllo";

if+(String.Compare(s1,+s2,+CultureInfo.CurrentCulture,+CompareOptions.IgnoreNonSpace)+==+0)
{
++++//+both+strings+are+equal
}|code-block|syntax|javascript|1670616|或者，如果您还希望比较不区分大小写|1670617|string+s1+=+"HEllO";
string+s2+=+"héLLo";

if+(String.Compare(s1,+s2,+CultureInfo.CurrentCulture,+CompareOptions.IgnoreNonSpace+%7C+CompareOptions.IgnoreCase)+==+0)
{
++++//+both+strings+are+equal
}|1670618|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

If you don't need to convert the string and you just want to check for equality you can use

<pre><code>string s1 = "hello";
string s2 = "héllo";

if (String.Compare(s1, s2, CultureInfo.CurrentCulture, CompareOptions.IgnoreNonSpace) == 0)
{
 // both strings are equal
}
</code></pre>

or if you want the comparison to be case insensitive as well

<pre><code>string s1 = "HEllO";
string s2 = "héLLo";

if (String.Compare(s1, s2, CultureInfo.CurrentCulture, CompareOptions.IgnoreNonSpace | CompareOptions.IgnoreCase) == 0)
{
 // both strings are equal
}
</code></pre>

blocks|key|1455713|text|我不得不做一些类似的事情，但使用的是StartsWith方法。这是一个从@Serge+-+appTranslator派生的简单解决方案。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1455714|下面是一个扩展方法：|1455715|++++public+static+bool+StartsWith(this+string+str,+string+value,+CultureInfo+culture,+CompareOptions+options)
++++{
++++++++if+(str.Length+>=+value.Length)
++++++++++++return+string.Compare(str.Substring(0,+value.Length),+value,+culture,+options)+==+0;
++++++++else
++++++++++++return+false;++++++++++++
++++}|code-block|syntax|javascript|1455716|对于一个班轮来说，是个怪胎;)|1455717|++++public+static+bool+StartsWith(this+string+str,+string+value,+CultureInfo+culture,+CompareOptions+options)
++++{
++++++++return+str.Length+>=+value.Length+&&+string.Compare(str.Substring(0,+value.Length),+value,+culture,+options)+==+0;
++++}|1455718|called和case+incensitive可以这样命名|1455719|value.ToString().StartsWith(str,+CultureInfo.InvariantCulture,+CompareOptions.IgnoreNonSpace+%7C+CompareOptions.IgnoreCase)|1455720|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|V|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|W|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

I had to do something similar but with a StartsWith method. Here is a simple solution derived from @Serge - appTranslator.

Here is an extension method: 

<pre><code> public static bool StartsWith(this string str, string value, CultureInfo culture, CompareOptions options)
 {
 if (str.Length &gt;= value.Length)
 return string.Compare(str.Substring(0, value.Length), value, culture, options) == 0;
 else
 return false; 
 }
</code></pre>

And for one liners freaks ;)

<pre><code> public static bool StartsWith(this string str, string value, CultureInfo culture, CompareOptions options)
 {
 return str.Length &gt;= value.Length &amp;&amp; string.Compare(str.Substring(0, value.Length), value, culture, options) == 0;
 }
</code></pre>

Accent incensitive and case incensitive startsWith can be called like this

<pre><code>value.ToString().StartsWith(str, CultureInfo.InvariantCulture, CompareOptions.IgnoreNonSpace | CompareOptions.IgnoreCase)
</code></pre>

blocks|key|1455755|text|一种更简单的去除重音的方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1455756|++++Dim+source+As+String+=+"áéíóúç"
++++Dim+result+As+String

++++Dim+bytes+As+Byte()+=+Encoding.GetEncoding("Cyrillic").GetBytes(source)
++++result+=+Encoding.ASCII.GetString(bytes)|code-block|syntax|javascript|1455757|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|$]]

A more simple way to remove accents:

<pre><code> Dim source As String = "áéíóúç"
 Dim result As String

 Dim bytes As Byte() = Encoding.GetEncoding("Cyrillic").GetBytes(source)
 result = Encoding.ASCII.GetString(bytes)
</code></pre>

I need to compare 2 strings in C# and treat accented letters the same as non-accented letters. For example:

<pre><code>string s1 = "hello";
string s2 = "héllo";

s1.Equals(s2, StringComparison.InvariantCultureIgnoreCase);
s1.Equals(s2, StringComparison.OrdinalIgnoreCase);
</code></pre>

These 2 strings need to be the same (as far as my application is concerned), but both of these statements evaluate to false. Is there a way in C# to do this?

Ignoring accented letters in string comparison

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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我需要比较C#中的2个字符串，并将重音字母视为非重音字母。例如：string s1 = "hello";string s2 = "héllo";s1.Equals(s2, StringComparison.InvariantCultureIgnoreCase);s1.Equals(s2, StringCompariso...

问在字符串比较中忽略重音字母
EN

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问在字符串比较中忽略重音字母EN