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C#中Split用法~

时间:2016-11-25 17:49:21      阅读:232      评论:0      收藏:0      [点我收藏+]

标签:one   bbb   多个   示例   重载函数   ons   使用   foreach   new   

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)
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(‘,‘)

转:不远道人的专栏     C#中Split用法~

C#中Split用法~

标签:one   bbb   多个   示例   重载函数   ons   使用   foreach   new   

原文地址:http://www.cnblogs.com/wangfuyou/p/6101992.html

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