C#中分割字符串输出字符数组

来自博客园 http://www.cnblogs.com/yugen/archive/2010/08/18/1802781.html

 

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：

stringstr = "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) publicstring[] Split(params char[] separator)

2) publicstring[] Split(char[] separator, int count)
3) public string[] Split(char[] separator, StringSplitOptionsoptions)
4) public string[] Split(string[] separator, StringSplitOptionsoptions)
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, intcount)

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
string[] 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
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(','）