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:
String str = "China";
INT len = str.length; // LEN is a custom variable, Str is a variable name of the string of the measured string
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.ispuncture ('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); // Returns 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"); // exchange national characters to CCR
Response.write (STR); // output result is "central"
Another example: (this very practical)
