如何编写一个允许数字，逗号和点的正则表达式(如2,010.00) [英] How to write a regular expression which allows numbers and comma and dot (like 2,010.00)

问题描述

我需要写一个允许数字和逗号的正则表达式

基本上，用户可以使用逗号和小数点输入金额，例如
@ 20.22或2,010.00

允许数字的表达式就是这个，但是现在如何修改表达式以满足要求.
正则表达式m =新的正则表达式("^ [0-9]");


请提前告知我所做的更改........

I need to write a regular expression which allows numbers and Comma

Basically user can enter amount with comma and dot like
@20.22 or 2,010.00

Expression which allows numbers is this but now how to modify the expression to satisfy the requirement.
Regex m = new Regex("^[0-9]");


Please let me know the changes for this,thanks in advance.....

推荐答案

尝试使用以下工具:
Regexp编辑器 [ ^ ]
RegexLib [ ^ ]

以所需的方式形成正则表达式.试试吧.

Try tools like:
Regexp Editor[^]
RegexLib[^]

Form the regular expressions the way you want. Try it.

它会像这样:

It would go something like this:

^(((([0-9]{1,3},)([0-9]{3},)*[0-9]{3})|[0-9]{1,3})(\.[0-9]+)?)

如果要排除前导零，则必须对其进行一些修改.如果您确实想这样做，我建议您采纳Sandeep的建议，并考虑使用免费提供的一些有用工具自己构建它.

You''d have to modify that a bit if you want to exclude leading zeros. If you do want to do that, I recommend you take Sandeep''s suggestion and look into constructing it yourself using some of the useful tools freely available to you.

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