C#中分割字符串輸出字符數組

來自博客園 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>");
輸出結果：
aaa
bbb
ccc
2、用多個字符來分隔：
string str="aaajbbbscccjdddseee"; 

string[] sArray=str.Split(new char[2] {'j','s'}); 
foreach(string i in sArray) Response.Write(i.ToString() + "<br>"); 
輸出結果：
aaa
bbb
ccc
ddd
eee
3、用單個字符來分隔：
string str="aaajbbbjccc";
string[] sArray=str.Split('j');
foreach(string i in sArray) Response.Write(i.ToString() + "<br>");
輸出結果：
aaa
bbb
ccc

 

 

////////////////////////////////////////////////

string[]arr = str.Split("o");

這是一個具有語法錯誤的語句，Split 的 separator參數應該是 char[] 或string[]，不應是字符串。正確的示例：

stringstr = "technology";
char[] separator = { 'o' };
string[] arr = str.Split(separator);

////////////////////////////////////////////////////

String.Split 方法有6個重載函數：

程序代碼

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)

下邊我們通過一些實例來說明下怎么使用(以下string words = "1,2.3,,4";)：
1. public string[] Split(params char[]separator)

程序代碼

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)

程序代碼

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)

程序代碼

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)

程序代碼

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)

程序代碼

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)

程序代碼

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

需要注意的是沒有重載函數public string[] Split(string[]separator)，所以我們不能像VB.NET那樣使用words.Split(",")，而只能使用words.Split(','）