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 type conversion to 32-bit digital
3, variable.tostring () character type 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.toTString ("P"); // Generate 1,234,500.00%
4, variable .length digital tanked string length: string str = "China"; int Len = str.length; // Len is a custom variable, Str is a variable name of the string of test
5, system.text.Encoding.default.getbytes (variable) word conversion to a ratio code such as: Byte [] Bytstr = system.text.encoding.default.getbytes (STR); then get a bit length: len = BYTSTR.LENGTH;
6, System.Text.StringBuilder ("") String is added, (is 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, parameter 1 is the left start bit number, parameter 2 is intercepted several bits. Such as: string s1 = str.substring (0, 2);
8, string user_ip = request.servervariables ["remote_addr"]. ToString (); Take a remote user IP address 9, pass the remote user's true IP address: if (Request.SerVariables ["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 Session value To assign: session ["username"] = "small Bush";
Value: Object objName = session ["Username"]; string strname = objName.toTString (); empty: session.removeall ();
11, string str = request.QueryString ["Variable"]; use hyperlink to transfer the variable. If you build a hyperlink in either page: Click in edit.aspx page: string str = request.queryString ["fdid"];
12, DOC object .CreateElement ("New Name Name"); Create a new node of XML document
13, parent node .Appendchild (child node); add the new child node to the XML document parent node
14, parent node. Removechild (node); delete node
15, response response.write ("string"); response.write (variable); output to the page.
Response.Redirect ("URL Address"); Jump to the page specified by the URL
16, char.iswhitespce - logical check specified location for empty characters; such as: string str = "Chinese people"; response.write (str, 2)); //// The result is: True, the first character is 0 bits, 2 is the third character.
17. Char.Ispunctuation ('character') - logical symbols are punctuation, such as: response.write (char.ispunctuation ('a')); // Return: false
18, (int) 'characters' turn the character into a number, check the code point, pay attention to the single quotation. Such as: response.write (int) '); / / The result is the code: 20013
19, (char) code converts the number into characters, checks the characters represented by the code. Such as: response.write ((char) 22269); // Returns the word "country". 20, Trim () Clear String String Space 21, String Variable.Replace ("Sub Stroke", "Replace") String Replacement, 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)
