zoukankan      html  css  js  c++  java
  • 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)
    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(',')
     
    原址:https://www.cnblogs.com/yugen/archive/2010/08/18/1802781.html
  • 相关阅读:
    kafka与Rocketmq的区别【转】
    k8s故障解决干货文档链接
    利用local nginx搭建k8s-1.17.4高可用kubernetes集群
    生产gitlab还原步骤
    jenkins备份和还原
    ASP.NET Core3.1使用IdentityServer4中间件系列随笔(二):创建API项目,配置IdentityServer保护API资源
    使用Feign出现404错误问题
    高并发系统限流-漏桶算法和令牌桶算法
    框架-springmvc源码分析(二)
    框架-springmvc源码分析(一)
  • 原文地址:https://www.cnblogs.com/Dumb-dog/p/12955534.html
Copyright © 2011-2022 走看看