Some of the experience of some strings of C # [Date: 2004-07-08] [From: ZT]
[Favorite this page]
// get the location code of Chinese characters
Byte [] array = new byte [2];
Array = system.text.Encoding.default.getbytes ("ah");
INT I1 = (SHORT) (Array [0] - '/ 0');
INT I2 = (SHORT) (Array [1] - '/ 0');
// unicode decoding method
Array = system.text.Encoding.uitode.getbytes ("ah");
I1 = (short) (Array [0] - '/ 0');
I2 = (short) (Array [1] - '/ 0');
// unicode anticode is Chinese character
String str = "4a55";
String S1 = Str.Substring (0, 2);
String s2 = str.substring (2, 2);
INT T1 = Convert.TOINT32 (S1, 16);
INT T2 = Convert.TOINT32 (S2, 16);
Array [0] = (Byte) T1;
Array [1] = (Byte) T2;
String s = system.text.Encoding.uitode.getstring (array);
// Default method anti-decoding is Chinese characters
Array [0] = (Byte) 196;
Array [1] = (Byte) 207;
S = system.text.encoding.default.getstring (array);
// Take the string length
S = "IAM square gun";
INT LEN = S.LENGTH; // Will Output AS 6
BYTE [] SARR = system.text.encoding.default.getbytes (s);
Len = Sarr.Length; // Will Output AS 3 3 * 2 = 9
// String plus
System.text.stringbuilder sb = new system.text.stringbuilder ("");
SB.Append ("i");
SB.Append ("am");
Sb.append ("Square Rifle");
String fox;
Fox.tolower () Convert to lowercase letters
Fox.toupper () transform into uppercase letters
Fox.trim () Delete front and rear spaces
Fox.trim (TrimChars) Delete other characters
Fox.trimstart () Delete the front space
Fox.trimend () Delete Space
Fox.padleft (10) increases the left space to make the string to a certain length.
Fox.padright (10) Increases the right space to make the string to a certain length.
Fox.padx (10, '-') adds other characters to make the string to a certain length. X finker: left / right
Fox.split ('') decomposes the string into an array
//format
String sf = string.format ("{0}) {1} {2} Japanese {3} {4} points", TEMP.YEAR, TEMP.MONTH, TEMP.DAY, CURRTIME.TRUANTTIME.HOUR, CURRTIME. TruantTime.minute);
// Some regular expressions
Internet address expression http: // ([/ w-] /.) [/ W-] (/ [/ w- ./?%&=]*)?
EMAIL address expression
/ w ([- .]/w ) *@/w ([-.]/w )**/W ([-.]/w ) *
Zip
/ d {6}
telephone number
(/ (/ D {3} /) | / d {3} -)? / d {8}
// Separate strings
String Total = "AAA, BBB, CCC, DDDD";
String [] stratay;
Char [] charRray = new char [] {','};
Strarray = Total.Split (Chararray);
//date
DateTime T1 = New DateTime (2002, 5, 30);
DateTime T2 = New DateTime (2002, 5, 23);
TIMESPAN DIFF = T1-T2;
Messagebox.show (Diff.days.tostring (DIFF.DAYS.TOSTRIN)
System.datetime.now.tostring ()
DateTime D1 = Convert. TodateTime ("2003-01-01 18:20:01");
String s = D1.toString ("YYYY-MM-DD HH: MM: SS");
//table of Contents
Environment.currentDirectory
Application.Startuppath
After the web form rolls, you can only remember the value of the ASP control, and you can't remember the value of the variable.
