[點(diǎn)晴永久免費(fèi)OA]C#中Split用法(把字符串以某個(gè)字符為分隔符分成一個(gè)數(shù)組)
1、用字符串分隔： string[] foreach 輸出結(jié)果： aaa bbb ccc 2、用多個(gè)字符來分隔： string string[] 輸出結(jié)果： aaa bbb ccc ddd eee string string[] foreach(string 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 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('',''） 該文章在 2017/2/24 15:29:00 編輯過 |
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