C ＃ split usage, split split split string

 Split a single string ：
string str=" Cordial greetings from Zhang San ！;
string[] strarry=str.Split(new string[] { " Zhang San " }, StringSplitOptions.None);
 Segmentation results ：[" come from "," My kind regards !"]

 Split a single character ：
string s="aaBBcdefgh;
string[] sArray=s.Split('c') ;
 Segmentation results ：["aaBB","defgh"]

 Split multiple single characters ：
tring s="abcdeabcdeabcde";
string[] sArray1=s.Split(new char[3]{'c','d','e'});
 Output the following result ：ab ab ab