C＃正则表达式字符串提取 [英] C# RegEx string extraction

问题描述

我有一个字符串：

ImageDimension = 655x0; ThumbnailDimension =为0x0。

我要提取第一个数字（655字符串）之间的进来ImageDimension =和X第一次出现;
和需要提取第二数字（0串）之后的第一个×来后ImageDimension =串的发生。相似与第三个和第四个数字

可以这样用正则表达式完成（ImageDimension = X ？; ThumbnailDimension = ？ X ？）又如何？而不是笨拙子和的indexOf？ ！谢谢

我的解决方案，它是不是很好：

 字符串配置=ImageDimension = 655x0; ThumbnailDimension =为0x0; 
字符串imageDim = configuration.Substring（0，configuration.IndexOf（;））; 
 INT indexOfEq = imageDim.IndexOf（=）; 
 INT indexOfX = imageDim.IndexOf（×）; 
 
字符串宽度1 = imageDim.Substring（indexOfEq + 1，indexOfX-indexOfEq-1）; 
字符串height1 = imageDim.Substring（imageDim.IndexOf（X）+ 1）; 
 
字符串thumbDim = configuration.Substring（configuration.IndexOf（;）+ 1）; 
 indexOfEq = thumbDim.IndexOf（=）; 
 indexOfX = thumbDim.IndexOf（×）; 
 
字符串宽度2 = imageDim.Substring（indexOfEq + 1，indexOfX  -  indexOfEq-1）; 
字符串身高2 = imageDim.Substring（imageDim.IndexOf（X）+ 1）; 
  

解决方案

这将得到的每个值转化为独立的整数你：

 字符串文本=ImageDimension = 655x0; ThumbnailDimension =为0x0; 
正则表达式=新的正则表达式（@ImageDimension =（小于？imageWidth> \d +）×（< imageHeight> \d +）; ThumbnailDimension =（小于？thumbWidth> \d +）×（ ？&所述; thumbHeight> \d +））; 
匹配匹配= pattern.Match（文本）; 
 INT imageWidth = int.Parse（match.Groups [imageWidth]值。）; 
 INT imageHeight = int.Parse（match.Groups [imageHeight]值。）; 
 INT thumbWidth = int.Parse（match.Groups [thumbWidth]值。）; 
 INT thumbHeight = int.Parse（match.Groups [thumbHeight]值。）; 
  

I have a string:

"ImageDimension=655x0;ThumbnailDimension=0x0".

I have to extract first number ("655" string) coming in between "ImageDimension=" and first occurrence of "x" ; and need extract second number ("0" string) coming after first "x" occurring after "ImageDimension=" string. Similar with third and fourth numbers.

Can this be done with regex ("ImageDimension=? x ?;ThumbnailDimension=? x ?") and how ? Instead of clumsy substrings and indexof ? Thank you!

My solution which is not nice :

String configuration = "ImageDimension=655x0;ThumbnailDimension=0x0";
String imageDim = configuration.Substring(0, configuration.IndexOf(";"));
int indexOfEq = imageDim.IndexOf("=");
int indexOfX = imageDim.IndexOf("x");

String width1 = imageDim.Substring(indexOfEq+1, indexOfX-indexOfEq-1);
String height1 = imageDim.Substring(imageDim.IndexOf("x") + 1);

String thumbDim = configuration.Substring(configuration.IndexOf(";") + 1);
indexOfEq = thumbDim.IndexOf("=");
indexOfX = thumbDim.IndexOf("x");

String width2 = imageDim.Substring(indexOfEq + 1, indexOfX - indexOfEq-1);
String height2 = imageDim.Substring(imageDim.IndexOf("x") + 1);

解决方案

This will get each of the values into separate ints for you:

string text = "ImageDimension=655x0;ThumbnailDimension=0x0";
Regex pattern = new Regex(@"ImageDimension=(?<imageWidth>\d+)x(?<imageHeight>\d+);ThumbnailDimension=(?<thumbWidth>\d+)x(?<thumbHeight>\d+)");
Match match = pattern.Match(text);
int imageWidth = int.Parse(match.Groups["imageWidth"].Value);
int imageHeight = int.Parse(match.Groups["imageHeight"].Value);
int thumbWidth = int.Parse(match.Groups["thumbWidth"].Value);
int thumbHeight = int.Parse(match.Groups["thumbHeight"].Value);

这篇关于C＃正则表达式字符串提取的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！