Format String in C #

1. Using system;
2. Using system. Collections. Generic;
3. Using system. text;
5. Namespace string
6. {
7. Class Format String
8. {
9. Public static void main ()
10. {
11. // The console. writeline method is actually calling string. Format (static), and the parameters are infinite.
12. // In this way, the writeline method does not actually perform a specific formatting operation.
13. // In the string. Format method, replace the first format specifier.
14. // In this example, stringbuilder is used for operations.
15. // In this replacement, stringbuilder uses static files for initialization, that is, the fixed part.
16. // Then call stringbuilder. appendformat () to pass the first format specifier example "{600: e}" in pairs with the corresponding first object, for example:
17. // This loop continues until all format characters are fully formatted.
19. // The following code is custom formatting.
21. Person = new person ();
22. Person. Age = 22;
23. Person. Name = "Aladdin ";
25. Console. writeline ("Format: {0,400: c}", person );
27. Console. Read ();
28. }
30. }
32. Class person: iformattable
33. {
34. Public string name;
35. Public int age;
37. // Method for implementing the formatting Interface
38. Public String tostring (string format, iformatprovider formatprovider)
39. {
40. String flag = NULL;
43. If ("E". Equals (Format ))
44. {
45. Flag = "E:" + this. Name + "" + this. Age;
46. }
47. Else if ("A". Equals (Format ))
48. {
49. Flag = "A:" + this. Name + "" + this. Age;
50. }
51. Else
52. {
53. Flag = "no. You can format a fart! ";
54. }
56. Return flag;
57. }
59. // Override the tostring method of the object
60. Public override string tostring ()
61. {
62. Return "Object:" + this. Name + "" + this. Age;
63. }
65. }
66. }