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      學(xué)習(xí)啦 > 學(xué)習(xí)英語 > 專業(yè)英語 > 計(jì)算機(jī)英語 > c中split的用法

      c中split的用法

      時(shí)間: 長思709 分享

      c中split的用法

        c中split的用法你知道嗎?下面小編就跟你們?cè)敿?xì)介紹下c中split的用法,希望對(duì)你們有用。

        c中split的用法如下:

        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(jié)果:

        aaa

        bbb

        ccc

        2、用多個(gè)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(jié)果:

        aaa

        bbb

        ccc

        ddd

        eee

        3、用單個(gè)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(jié)果:

        aaa

        bbb

        ccc

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

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

        這是一個(gè)具有語法錯(cuò)誤的語句,Split 的 separator 參數(shù)應(yīng)該是 char[] 或 string[],不應(yīng)是字符串。正確的示例:

        string str = "technology";

        char[] separator = { 'o' };

        string[] arr = str.Split(separator);

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

        String.Split 方法有6個(gè)重載函數(shù):

        程序代碼

        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)

        下邊我們通過一些實(shí)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, int count)

        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(shù)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(',')

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