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：aaabbbccc2、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：aaabbbcccdddeee3、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：aaabbbccc   //////////////////////////////////////////////// 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(','）