C#.Net中的正则表达式 [英] Regular Expressions in C#.Net

问题描述

我的项目中有一个要求，其中输入将为1; 827364726或2; 34833560.
即输入必须以1或2和一个delimitor(;)开头，然后是0-9之间的任何数字.我想在处理之前验证输入.所以我想使用正则表达式模式，如下所示.下面的正则表达式模式不起作用

var patt =/[12]; [0-9]/

无论如何，有什么方法可以验证我在C#中的输入，还是必须使用正则表达式模式?

谢谢
Prashanth

Hi,

I have a requirement in my project where the input will be 1;827364726 or 2;34833560.
i.e the input must starts with either with 1 or 2 and a delimitor(;)and then any number from 0-9.I want to validate the input before processing.So i want to use regular expression pattern something like as shown below.The below regular expression pattern is not working

var patt=/[12];[0-9]/

Is there anyway to validate my input in C# or i must go with regular expression pattern?

Thanks
Prashanth

推荐答案

，您可以使用此patt

you can use this patt

^[12];\d+

使用正则表达式，您可能会使用以下内容:

With regular expressions you could possibly use something like:

[12];(\d){8,9}

另一种选择是根据分号分割文本并检查是否有两个返回元素，第一个具有数字1或2，第二个为整数.使用的方法是:
- String.Split [ Int32.TryParse [

Another option would be to split the text based on the semicolon and check that there are two return elements, the first one has number 1 or 2 and the second one is integer. Methods to use with this would be:
- String.Split[^]
- Int32.TryParse[^]

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