如何检查字符串是否包含从a到z的任何字母?

问题描述:


可能重复:

C#正则表达式:检查az和AZ



$ b b

我可以使用下面的代码:

I could just use the code below:

String hello = "Hello1";
Char[] convertedString = String.ToCharArray();
int errorCounter = 0;
for (int i = 0; i < CreateAccountPage_PasswordBox_Password.Password.Length; i++) {
    if (convertedString[i].Equals('a') || convertedString[i].Equals('A') .....
                            || convertedString[i].Equals('z') || convertedString[i].Equals('Z')) {
        errorCounter++;
    }
}
if(errorCounter > 0) {
    //do something
}

但我想它需要太多的线只是一个简单的目的,我相信有一种方法更简单,我还没有掌握的方式。 / p>

but I suppose it takes too much line for just a simple purpose, I believe there is a way which is much more simple, the way which I have not yet mastered.

替换为

errorCounter = Regex.Matches(yourstring,@"[a-zA-Z]").Count;

请记住使用 Regex 在导入中使用System.Text.RegularExpressions;