1, DateTime Digital
System.datetime CurrentTime =
New system.datetime ();
1.1 Take the first day of the month
CurrentTime = system.datetime.now;
1.2 taken the previous year
INT year = currenttime.year;
1.3 take the previous month
Int month = currenttime.month;
1.4 Take the day
INT day = currenttime.day;
1.5 Take the current time
INT = currenttime.Hour;
1.6 take the front part
INT = CURRENTTIME.MINUTE;
1.7 take the second second
INT second = currenttime.second;
1.8 takes the current millisecond
INT millisecond = currenttime.millisecond;
(Variable can be available in Chinese)
2, int32.parse (variable) INT32.PARSE ("constant")
Character conversion to 32-bit digital
3, variable .tostring ()
Character conversion to string
12345.Tostring ("N");
/ / Generate 12, 345.00 12345.toString ("C");
/ / Generate ¥ 12,345.00 12345.toString ("e");
/ / Generate 1.234500E 004 12345.toString ("f4");
/ / Generate 12345.0000 12345.toString ("X");
/ / Generate 3039 (16) 12345.Tostring ("P");
/ / Generate 1,234,500.00%
4, variable .length digital type
Take a string length:
Such as:
String str = "China";
Int Len
= Str.Length;
// LEN is a custom variable, Str is a variable name of the string of the test
5, System.Text.Encoding.default.getbytes (variable)
Frame conversion to a specific code
Such as: byte [] Bytstr
= System.Text.Encoding.default.getbytes (STR);
Then you can get the bit length:
Len
= BYTSTR.LENGTH;
6, System.Text.StringBuilder ("" ")
The string is added, ( is not the same?)
Such as: System.Text.StringBuilder SB
=
New system.text.stringbuilder ("");
Sb.Append ("China");
Sb.append ("people");
SB.Append ("Republic");
7, variable. Substring (parameter 1, parameter 2);
Part of the interception string, the parameter 1 is the left start bit number, and the parameter 2 is a few digits.
Such as:
String S1
= Str.Substring (0, 2);
8, string user_ip = request.servervariables ["remote_addr"]. TOSTRING ();
Take a remote user IP address
9, through the proxy server to take a remote user real IP address:
IF (Request.ServerVariables ["http_via"]! =
NULL) {
String user_ip = request.servervariables ["http_x_forwarded_for"]. TOSTRING ();
Else {
String User_ip = Request.serverVariables ["remote_addr"]. TOSTRING ();
}
10, session ["variable"];
Access the session value;
For example, assignment: session ["username"] = "small Bush";
Value: object objname = session ["username"];
String strname = Objname.toString ();
Empty: session.removeall ();
11, string str = request.queryString ["Variable"];
Use hyperlink to transfer variables.
Take the value in the Edit.aspx page: string str = request.queryString ["fdid"];
12, DOC object .createElement ("New Node Name");
Create an XML document new node
13, parent node .Appendchild (child node);
Add the newly created child node to the XML document parent node
14, parent node. Removechild (node);
Delete node
15, Response
Response.write ("string");
Response.write;
Output to the page.
Response.Redirect ("URL Address");
Jump to the page specified by the URL
16,
Char.IsWhitesPCE (string variable, bit) - logical type
Check if the specified position is empty characters;
Such as:
String str = "Chinese people";
Response.write
Char.iswhitespace (STR, 2));
/ / The result is: True, the first character is 0 bits, 2 is the third character.
17.
Char.ispunctuation ('Character') - logical type
Is it a punctuation?
Such as: Response.write
Char.ispunctuation ('a'));
// Return: false
18,
int) 'Character'
Turn characters to numbers, check the code points, and pay attention to single quotes.
Such as:
Response.write
INT) '");
/ / The result is the code: 20013
19, (
char) code
Turn the number into characters, check the characters represented by the code.
Such as:
Response.write
CHAR) 22269);
// Return to the "National" word.
20, TRIM ()
Clear strings before and after space
21, string variables.Replace ("Sub string", "replace")
String replacement
Such as:
String str = "China";
Str = str.replace ("Country", "Central");
// Replace the national word to CCR RESPONSE.WRITE (STR);
// The output is "central"
Another example: (this very practical)
