我试图写一个.net正则表达式超过2 consecutives字母。

I am attempting to write a .Net Regex for more than 2 consecutives letters.

aa - fine
Aa - fine
aaa - not allowed
Aaa - not allowed

我是新来的正则表达式，但是这是我所拼凑至今。

I am new to regex, but this is what I have pieced together so far.

if (Regex.IsMatch(Password, @"/[^A-Za-z]{2}/"))
    return "Password cannot contain 3 consecutive same letters"; 

我不知道这是否是关闭与否。

I am not sure if this is close or not.

推荐答案

您需要删除的斜线（他们为什么呢？这是不是PHP），你可以用忽略大小写标志。像：

You need to remove the slashes (why are they there? this is not PHP) and you could use the ignore case flag. Like:

Regex.Match(pw, @"(?i)(.)\1\1")

这是一样的：

Which is same as:

Regex.Match(pw, @"(.)\1\1", RegexOptions.IgnoreCase)

由于评论由伊利亚-G。

As commented by Ilia G.