检查天气字符串包含数字特殊字符等 [英] Check weather string Contain numbers special Char etc

问题描述

如何检查天气字符串包含特殊字符等数字

how can check weather a string Contain numbers special Char etc

推荐答案

IndexOfAny()[^] looks like a good choice.

Richard MacCutchan 很好.
或者，如果您要检查字符串是否包含特定类别的字符，例如Punctuation 或Numbers 等，则可以考虑使用System.Text.RegularExpressions.Regex 类，如下所示:

The Solution 1 given by Richard MacCutchan is very good.
As an alternative if you want to check whether the string contains a particular category of characters say Punctuation or Numbers etc., then the System.Text.RegularExpressions.Regex class can be considered to test as shown below:

string text = "Is this text, contains special chars?";
//The Regex pattern matches if atleast one character of the
//alternatives is found \p{P} Unicode punctuation category
//\p{N} Unicode numbers category
if(System.Text.RegularExpressions.Regex.IsMatch(text,@"\p{P}|\p{N}"))
    Console.WriteLine ("Contains special chars");
else
    Console.WriteLine ("Does not contain special chars");

//Output
//Contains special chars

您可能会请尝试以下，

You might try below,

class Program
{
    static void Main(string[] args)
    {
        string randomCharacters = "HelloWorld2090!!!@#

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