Recently, many posts in the forum have often seen how to use split to split strings. I will do some simple summary for splits, I hope to help everyone. Here are several ways:
The first method: Open VS.NET to create a new console project. Then enter the following programs under the main () method.
String s = "abcdeabcdeabcde";
String [] Sarray = S.Split ('c');
FOREACH (String I in Sarray)
Console.writeline (i.tostring ());
Output the following result: ab
DEAB
DEAB
de
We see the result is divided in a specified character. If we want to use multiple characters to split how C, D, E do? Ok, we use another constructor:
Change to string s = "abcdeabcdeabcde
String [] Sarray1 = S.Split (New Char [3] {'C', 'D', 'E'});
FOREACH (String I in Sarray1)
Console.writeline (i.tostring ());
You can output the following results: ab
AB
AB
In addition to the above two methods, the third method is to use a regular expression. Create a new console project. Then add USING SYSTEM.TEXT.REGULAREXPRESSITIONS.
Main (): Changed to
System.Text.RegularExpressions
String content = "agcsmallmAcsmallgggsmallytx";
String [] resultstring = regex.split (content, "small", regexoptions.ignorecase)
FOREACH (String I in Resultstring)
Console.writeline (i.tostring ());
Output the following results: AGC
Mac
GGG
YTX
What is the benefit of using regular expressions? Don't worry, we will see its uniqueness.
The fourth method is described below. such as
String str1 = "I ***** is the ***** one ***** ***** teaching ***** teacher";
If I want to be displayed: I am a teacher, how do you work? We can use the following code:
String str1 = "I ***** is the ***** one ***** ***** teach ***** teacher;
String [] str2;
Str1 = str1.replace ("*****", "*");
Str2 = str1.split ('*');
FOREACH (String I in str2)
Console.writeline (i.tostring ());
This can also get the correct result. But for example
String str1 = "I ** is ***** one ***** ***** teaching ***** teacher";
I hope that the result is: I am a teacher.
If I use the fourth method above, I will generate the following error: I am a teacher.
There is space in the middle, so the output is not the result I hope, how to solve it? This also returns to the regular expression (here you can see its powerful power), then the fifth method can be used at this time:
String str1 = "I ** is ***** one ***** ***** teaching ***** teacher";
String [] str2 = system.text.RegularExpressions.Regex.Split (str1, @ "[*] "); foreach (String I in str2)
Console.writeline (i.tostring ());
Here is the "[*] " clever completed our goals.
The above introduction to several ways to split strings in C #, if you have a better way, please communicate with me :)
