1   private void button1_Click(object sender, EventArgs e) 2         { 3             string aaaa = "NACA-1-4-0008"; 4             string[] indexlist = aaaa.Split('-'); 5         } 6  7         private void button2_Click(object sender, EventArgs e) 8         { 9             string str = "aaajSbbbjscccJS";10             string[] sArray = Regex.Split(str, "js", RegexOptions.IgnoreCase);11 12             string str1 = "technology";13             char[] separator = { 'o' };14             string[] arr = str1.Split(separator);15         }16 17         private void button3_Click(object sender, EventArgs e)18         {19             string str = "aaajbbbscccjdddseee";20             string[] sArray = str.Split(new char[2] { 'j', 's' });21         }22 23         string words = "1,2.3,,4";24         private void button4_Click(object sender, EventArgs e)25         {26             string[] split = words.Split(new Char[] { ',', '.' }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素27             string[] split1 = words.Split(new Char[] { ',', '.' }, 3, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素 28             string[] split2 = words.Split(new Char[] { ',', '.' }, 4, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素 29             string[] split3 = words.Split(new Char[] { ',', '.' }, 5, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素 30             string[] split4 = words.Split(new Char[] { ',', '.' }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素 31         }32 33         private void button5_Click(object sender, EventArgs e)34         {35             string[] split = words.Split(new string[] { ",", "." }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素36             string[] split1 = words.Split(new string[] { ",", "." }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素37         }38 39         private void button6_Click(object sender, EventArgs e)40         {41             string[] split = words.Split(new string[] { ",", "." }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素42             string[] split1 = words.Split(new string[] { ",", "." }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素 43         }44 45         private void button7_Click(object sender, EventArgs e)46         {47             string[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素48             string[] split1 = words.Split(new Char[] { ',', '.' }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素 49         }50 51 52         //需要注意的是没有重载函数public string[] Split(string[] separator)，53         //所以我们不能像VB.NET那样使用words.Split(",")，而只能使用words.Split(','）