包含不适用于特殊字符 [英] contains not working for special characters

问题描述

包含未给出特殊字符的正确结果

  var  searchstring =  ？/！@＃$$％^& *; 
 
 
  bool  isworking = searchstring.Contains（ ？/！@＃$$％^& *）; 

i我正在 isworking as false

解决方案

％^& *;


bool isworking = searchstring.Contains（ ？/！@＃

％^& *）;

i得到 isworking as false

您显示的代码可能不是您的意思：包含匹配原始字符串作为原始子字符串 - 所以如果输入字符串不包含匹配中的每个字符字符串完全相同的顺序，没有插入字符，匹配将返回false。

所以

   ABCD .Contains（  BC）

将返回 true ，而

   AB.CD .Contains（  BC ）

将返回 false 。



string.Contains不支持通配符，所以如果你想要你需要一个正则表达式，如果你想包含任何这些字符而不是字符串匹配那么你想要 IndexOfAny [ ^ ]

contains not giving proper result for special charcters

var searchstring = "?/!@#$$%^&*";


bool isworking = searchstring.Contains("?/!@#$$%^&*");

i am getting isworking as false

解决方案

%^&*"; bool isworking = searchstring.Contains("?/!@#

%^&*");

i am getting isworking as false

It's possible that the code you show is not what you mean: Contains matches the whole string as-is as a substring in the original - so if the input string does not contain every character in the "match string" in exactly the same order and with no intervening characters, the match will return false.
So

"ABCD".Contains("BC")

will return true, while

"AB.CD".Contains("BC")

will return false.

string.Contains does not support wildcards, so if you want that you will need a Regex, and if you want "contains any of these characters" instead of a string match then you want IndexOfAny[^]

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