C # static method calls a non-static method

Reprint: http://blog.csdn.net/seattle1215/article/details/6657814

2. Using System;
4. Using System.Collections.Generic;
6. Using System.Linq;
8. Using System.Text;
12. Namespace Cash
14. {
16. Class Program
18. {
20. static void Main (string[] args)
22. {
24. (new Program ()). Run ();
28. //Writefee (Calculate (dailyrate, WorkDay));
30. //For non-static methods, if you imagine a direct call like above, you will report the following error
32. //Error 1 An object reference is required
34. //For the Non-static field, method, or
36. //Property ' Cash.Program.readDouble (String) '
40. Printfotherthing ("static method is called."); The //static method can be called directly
42. Program program = new program (); //Non-static method requires an object to be created first
44. //Then call with Object
46. Program.printsomething ("Non-static Menthod is called.");
48. }
52. public Void Run ()
54. {
56. Double dailyrate = readdouble ("Please enter your rate:");
58. int workDay = readInt ("Please enter your days of working:");
60. Writefee (Calculate (dailyrate, WorkDay));
62. }
66. private void Writefee (double p)
68. {
70. Console.WriteLine ("The consultant ' s fee is: {0}", p * 1.6);
72. }
76. private Double calculate (double dailyrate, int workDay)
78. {
80. return dailyrate * WORKDAY;
82. }
86. private int readInt (string p)
88. {
90. Console.WriteLine (P);
92. string a = Console.ReadLine (); //Read the input characters (ReadLine read
94. //characters are of type string)
96. return Int.                    Parse (a); //Convert a to int type, and return
98. }
102. private Double readdouble (string p)
104. {
106. Console.WriteLine (P);
108. String line = Console.ReadLine ();
110. return Double.  Parse (line);
112. }
116. private void printsomething (string a) //Non-static method
118. {
120. Console.WriteLine (a);
122. }
126. private static void printfotherthing (string a) //static method
128. {
130. Console.WriteLine (a);
132. }
134. }
136. }

C # static method calls a non-static method