C#中Split用法

 

1、用字符串分隔: 
using System.Text.RegularExpressions;
string str="aaajsbbbjsccc";
string[] sArray=Regex.Split(str,"js",RegexOptions.IgnoreCase);
foreach (string i in sArray) Response.Write(i.ToString() + "<br>");
输出结果:
aaa
bbb
ccc
2、用多个字符来分隔:
string str="aaajbbbscccjdddseee"; 
string[] sArray=str.Split(new char[2{'j','s'}); 
foreach(string i in sArray) Response.Write(i.ToString() + "<br>"); 
输出结果:
aaa
bbb
ccc
ddd
eee
3、用单个字符来分隔: string str="aaajbbbjccc";
string[] sArray=str.Split('j');
foreach(string i in sArray) Response.Write(i.ToString() + "<br>");
输出结果:
aaa
bbb
ccc

 

 
string[] arr = str.Split("o");

这是一个具有语法错误的语句,Split 的 separator 参数应该是 char[] 或 string[],不应是字符串。正确的示例:

string str = "technology"; char[] separator = { 'o' }; string[] arr = str.Split(separator);
 
 
String.Split 方法有6个重载函数:
程序代码
1) public string[] Split(params char[] separator)
2) public string[] Split(char[] separator, int count) 3) public string[] Split(char[] separator, StringSplitOptions options) 4) public string[] Split(string[] separator, StringSplitOptions options) 5) public string[] Split(char[] separator, int count, StringSplitOptions options) 6) public string[] Split(string[] separator, int count, StringSplitOptions options)
下边我们通过一些实例来说明下怎么使用(以下string words = "1,2.3,,4";):
1. public string[] Split(params char[] separator)
程序代码
string[] split = words.Split(new Char[] { ',' });//返回:{"1","2.3","","4"}
string[] split = words.Split(new Char[] { ',', '.' });//返回:{"1","2","3","","4"}
2. public string[] Split(char[] separator, int count)ITPUB个人空间,n:H!C0M/S3U\u0002P
程序代码
string[] split = words.Split(new Char[] { ',', '.' }, 2);//返回:{"1","2.3,,4"}
string[] split = words.Split(new Char[] { ',', '.' }, 6);//返回:{"1","2","3","","4"}
3. public string[] Split(char[] separator, StringSplitOptions options)
程序代码
string[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.RemoveEmptyEntries);
//返回:{"1","2","3","4"} 不保留空元素
string[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.None);
//返回:{"1","2","3","","4"} 保留空元素
4. public string[] Split(string[] separator, StringSplitOptions options)
程序代码
string[] split = words.Split(new string[] { ",", "." }, StringSplitOptions.RemoveEmptyEntries);
//返回:{"1","2","3","4"} 不保留空元素 \u0002w1I+Ch%^\u0017}0string[] split = words.Split(new string[] { ",", "." }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素 5. public string[] Split(char[] separator, int count, StringSplitOptions options)
程序代码
string[] split = words.Split(new Char[] { ',', '.' },
2, StringSplitOptions.RemoveEmptyEntries);
//返回:{"1","2.3,,4"} 不保留空元素ITPUB个人空间1K;e\u0007f\u0008f }\u0011C n string[] split = words.Split(new Char[] { ',', '.' }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素 6. public string[] Split(string[] separator, int count, StringSplitOptions options)
程序代码
string[] split = words.Split(new string[] { ",", "." },
2, StringSplitOptions.RemoveEmptyEntries);
//返回:{"1","2.3,,4"} 不保留空元素 string[] split = words.Split(new string[] { ",", "." },
6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素
需要注意的是没有重载函数public string[] Split(string[] separator),所以我们不能像VB.NET那样使用words.Split(","),而只能使用words.Split(',')
 
 
转载来源:http://www.cnblogs.com/yugen/archive/2010/08/18/1802781.html
 
posted @ 2016-11-25 15:01  hao_1234_1234  阅读(255)  评论(0编辑  收藏  举报