如何使用c#将所有特殊字符替换为字符串

I would like to replace all special characters in a string with a comma (,).

我想用逗号(，)替换字符串中的所有特殊字符。

For Example:

例如:

Hello@Hello&Hello(Hello)

the output -

输出-

Hello,Hello,Hello,Hello,

(I don't known how to use regexp in C#)

(我不知道如何在c#中使用regexp)

Can i do this work using regexp in C#?

我可以在c#中使用regexp完成这项工作吗?

4 个解决方案

#1

Yes, you can use regular expressions in C#.

是的，您可以在c#中使用正则表达式。

Using regular expressions with C#:

使用正则表达式与c#:

using System.Text.RegularExpressions;

string your_String = "Hello@Hello&Hello(Hello)";
string my_String =  Regex.Replace(your_String, @"[^0-9a-zA-Z]+", ",");

#2

Assume you want to replace symbols which are not digits or letters (and _ character as @Guffa correctly pointed):

假设您想要替换不是数字或字母的符号(并且_字符为@Guffa正确指向):

string input = "Hello@Hello&Hello(Hello)";
string result = Regex.Replace(input, @"[^\w\d]", ",");
// Hello,Hello,Hello,Hello,

You can add another symbols which should not be replaced. E.g. if you want white space symbols to stay, then just add \s to pattern: \[^\w\d\s]

您可以添加另一个不应该被替换的符号。例如:如果你想要空白符号留下来,然后添加\ s模式:\[^ \ w \ d \ s]

#3

You can use a regular expresion to for example replace all non-alphanumeric characters with commas:

您可以使用常规的expresion，例如用逗号替换所有非字母数字字符:

s = Regex.Replace(s, "[^0-9A-Za-z]+", ",");

Note: The + after the set will make it replace each group of non-alphanumeric characters with a comma. If you want to replace each character with a comma, just remove the +.

注意:设置后的+将使它用逗号替换每组非字母数字字符。如果要用逗号替换每个字符，只需删除+。

#4

Also, It can be done with LINQ

同样，它可以用LINQ来完成。

var str = "Hello@Hello&Hello(Hello)";
var characters = str.Select(c => char.IsLetter(c) ? c : ',')).ToArray();             
var output = new string(characters);
Console.WriteLine(output);

#1