[英]How do you check if a string contains an int at a specific location?
I want to make sure that a folder has the correct name format before proceeding. 在继续之前,我想确保文件夹具有正确的名称格式。 The code below demonstrates what I am trying to do, although {char.IsDigit} doesn't work. 尽管{char.IsDigit}不起作用,但是下面的代码演示了我正在尝试执行的操作。 I would like to replace char.IsDigit with something that means "any digit". 我想用“任何数字”代替char.IsDigit。
if(versionName == $"Release {char.IsDigit}.{char.IsDigit}.{char.IsDigit}.{char.IsDigit}")
{
//Do something
}
Thanks 谢谢
You want to use Regex.IsMatch
with a regex like: 您想将Regex.IsMatch
与以下正则表达式一起使用:
if(Regex.IsMatch(versionName, @"^Release \d\.\d\.\d\.\d$"))
{
//Do something
}
Note \\d
just matches a single digit, if there can be more than 1 digits 注意\\d
仅匹配一个数字,如果可以超过1个数字
@"^Release \d+\.\d+\.\d+\.\d+$"
And tightening it all up: 并全部收紧:
@"^Release \d+(?:\.\d+){3}$"
See the regex demo and its graph : 参见regex演示 及其图形 :
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.