Strong c #. net function list

1. DateTime numeric type
System. DateTime currentTime = new System. DateTime ();
1.1 take the current year, month, day, hour, minute, second
CurrentTime = System. DateTime. Now;
1.2 get current year
Int Year = currentTime. Year;
1.3 take the current month
Int Month = currentTime. Month;
1.4 get the current day
Int Day = currentTime. Day;
1.5 current time
Int = currentTime. Hour;
1.6 get the current score
Int = currentTime. Minute;
1.7 takes the current second
Int Second = currentTime. Second;
1.8 takes the current millisecond
Int Millisecond = currentTime. Millisecond;
(The variable can be in Chinese)
2. Int32.Parse (variable) Int32.Parse ("constant ")
Convert string to 32-digit font
3. Variable. ToString ()
Convert string 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 (hexadecimal)
12345. ToString ("p"); // generate 1,234,500.00%
4. Variable. Length numeric type
String Length:
For example, string str = "China ";
Int Len = str. Length; // Len is a custom variable, and str is the variable name of the string to be tested.
5. System. Text. Encoding. Default. GetBytes (variable)
Convert character code to bit code
For example, byte [] bytStr = System. Text. Encoding. Default. GetBytes (str );
Then we can get the bit length:
Len = bytStr. Length;
6. System. Text. StringBuilder ("")
String addition, (is the same as the + number ?)
For example, System. Text. StringBuilder sb = new System. Text. StringBuilder ("");
Sb. Append ("China ");
Sb. Append ("people ");